Method of determining agro-resource state of soil on ameliorative scale of rice irrigation system
SUBSTANCE: method includes transformation of the obtained image, and calculation of the areas of marked contours. And in non-vegetation period with the navigation system the coordinates and numbers of points of soil sampling and level measurements and groundwater salinity are applied to the map of the rice field. Then a quantitative assessment of ameliorative state of the soil is carried out of rice irrigation system according to the level and salinity of groundwater, humus content, acid-base properties of the soil, provision of hydrolysable nitrogen, mobile potassium and mobile phosphorus, the percentage of soil aggregates in the ploughed horizon, the degree and type of soil salinity by assigning each ameliorative criteria from 1 to 5 points, depending on the extent of its impact on the ameliorative state of the soil. After that, according to the score of ameliorative criteria the ameliorative state of the soil is evaluated, and with a score of 8-20 the ameliorative state of the soil is considered good, 20-30 - satisfactory, 30-40 - unsatisfactory. Then, for each ameliorative state of the soil the flow process chart with optimally-adaptive complex of manufacturing operations is developed.
EFFECT: method enables to increase the agro-resource potential of the rice irrigation system and rice yield.
2 tbl, 1 ex
The invention relates to the field of study of the earth surface and can be used in agriculture, particularly for rice cultivation.
From the literature [1, 2, 3, 4] known methods of aerospace monitoring of ecosystems, studies of the environmental objects and examine the state of the soil in which the statistical data and analytical dependences for remote indication of the content of humus in the soil [1, P80], they distinguish five [1, p.88], [4, p.100] gradations of status humus optical densities and prove the exponential nature of the dependence of optical density of a photographic image from the content of humus in the soil.
The disadvantages of these methods are the inability of their application on rice irrigation system, high cost of aerospace monitoring, low precision of the estimate of reclamation state soil only on the content of humus in the soil.
There is a method of contouring areas vegetation cover using satellite imagery, including radar sensing from aircraft in the microwave range, a comparison of the characteristics of the reflected signal with the characteristics of the sensed object and the judgment on the comparison of the status of vegetation cover for each object vegetative cover is and determine its volume, forming the reflected signal, and the comparison of this signal is performed with the characteristics specified volume of the object (SU 1379758, G01V 9/00, 07.03.1988).
The disadvantages of this method are the inability of its application on rice irrigation system only detects the volumetric characteristics of the research object, the high cost of conducting radar sensing from aircraft in the microwave range, the high complexity and the complexity of the evaluation of the condition of vegetation.
There is a method of contouring areas of protective forest plantations based on satellite images, including space photography taking into account the phases of vegetation and the separation of abnormal according to the degree of spectral brightness areas, carrying out by him of terrestrial surveys, assessment of vegetation feature and delineation of areas on the evaluation results (EN 2211465, G01V 9/00, 27.08.2003).
The disadvantages of this method are the inability of its application on rice irrigation system, high cost of satellite imagery, the low accuracy of the results.
The known method for aerospace survey the surface of the exposed soil in early spring or late autumn, including the transformation of the received image, the evaluation fot the tone of these areas on a 256-level grayscale color the selection of paths through the levels of gray scale, the calculation of the area of the selected paths, the binding of the processed image to the soil map and its transformation. Assessment of soil degradation is carried out by the humus content in the soil cover of the contours, which is determined by the formula G=Kmaxe-0,0276fwhere G is the percentage of humus in the soil cover, Kmax- coefficient taking into account the soil type, f is the current value of the gray level in aerospace photograph (EN 2265839, G01N 33/24, G01V 9/00, 13.04.2004).
The disadvantages of this method are the inability of its application on rice irrigation system, the high cost of conducting aerial surveys, the low precision of the estimate of reclamation state soil only on the content of humus in the soil, the high complexity and the complexity of the evaluation of the condition of the soil.
The technical result of the invention is the implementation of the rice fields optimally adaptive complexes of technological operations is developed, taking into account the reclamation characteristics of each rice fields, routing, which allows specialists of agro-industrial complex more effectively and in time to perform reclamation activities in the rice fields, to increase agroresources potential of rice irrigation systems to save energy and reduce the complexity of the performed soil-conservation measures, to reduce the cost and increase the yield of rice.
The technical result is achieved by the fact that in the known method of determining agroresources status of soil reclamation scale rice irrigation system, including the transformation of the received image, the calculation of the area of the selected paths according to the invention in wavegetarian period using the navigation system on the map rice fields put the coordinates and the number of points sampling and measurements of the level and groundwater salinity, then perform a quantitative assessment of meliorative condition of soils rice irrigation system level and groundwater salinity, humus content, soil pH; security hydrolyzable nitrogen, rolling potassium and fluid phosphorus; percentage content in the arable horizon of soil aggregates; the degree and type of soil salinity by assigning each reclamation criteria from 1 to 5 points depending on the extent of his influence on the drainage condition of the soil; then the sum of points reclamation criteria evaluate the ameliorative condition of the soil, and when the amount of points 8-20 meliorative condition of the soil is good; 20-30 satisfactory, 30-40 is unsatisfactory, then for each reclamation soil conditions develop Tehnologichesky the map with the optimal-adaptive complex technological operations.
The novelty of the claimed invention is optimally adaptive implementation of complex technological operations in rice fields in the routing, which is developed with consideration of the ameliorative state soil of rice fields, which allows to improve the drainage condition of the soil of rice fields, save energy and reduce the complexity perform reclamation activities.
Binding points sampling using the navigation system enables high-precision select borders and to calculate areas and with different reclamation land, and use the binding by the route of agricultural technology to save energy and reduce labor performed soil-conservation measures.
Perform sampling on the main reclamation criteria: the level and groundwater salinity, humus content, soil pH; security hydrolyzable nitrogen, rolling potassium and fluid phosphorus; the percentage in the arable horizon of soil aggregates; the degree and type of soil salinity, makes necessary and sufficient degree of accuracy to judge the ameliorative status of soils of rice fields and to perform a quantitative assessment of meliorative condition of the soil.
Quantifying meliorativnogo soil condition on the sum of points allows you to use an integrated approach in the development of innovative complexes of technological operations to develop optimally adaptive technology cards, to improve the ecological situation in the rice irrigation system, to reduce the cost of rice cultivation and to increase the yield of rice.
The method is as follows
In wavegetarian period in the rice fields rice fields on the map using the navigation system put the coordinates and the number of points sampling and measurements of the level and groundwater salinity. To assess the ameliorative status of soils of rice fields at each point determine the level and groundwater salinity, humus content, soil pH; security hydrolyzable nitrogen, rolling potassium and fluid phosphorus; the percentage in the arable horizon of soil aggregates; the degree and type of soil salinity. Data from soil sampling and measurements of the level and groundwater salinity each point (according to table 1) scored. On a score of reclamation criteria at each point estimate reclamation soil condition: if the score 8-20 meliorative condition of the soil is good; 20-30 satisfactory, 30-40 is unsatisfactory. Then perform the selection of contours plots with different land-reclamation soil by joining points with the same reclamation feature. Then perform the calculation with various ameliorative condition of the soil. Gave the e for each reclamation soil conditions develop process map with optimal-adaptive complex technological operations.
An example of the method
Test method for the assessment of reclamation of soil condition and effectiveness of ongoing reclamation techniques for rice irrigation system was held in JSC "chernoerkovskoe" Slavic district of Krasnodar region.
In wavegetarian period of five rice fields using GPS put the coordinates and the number of points sampling and measurements of the level and groundwater salinity. The point was apart from each other at a distance of 50 m To evaluate the ameliorative status of soils of rice fields at each point determine the level and groundwater salinity, humus content, soil pH; security hydrolyzable nitrogen, rolling potassium and fluid phosphorus; the percentage in the arable horizon of soil aggregates; the degree and type of soil salinity. Data from soil sampling and measurements of the level and groundwater salinity at each point (table 1) scored. On a score of reclamation criteria each point estimate meliorative condition of the soil. Then the rice fields perform allocations contours plots with different land-reclamation soil by joining points with the same ameliorative response and calculate the areas of these sites. Developed process maps in wavegetarian period issue is lnewt optimal-adaptive complexes of technological operations with regard to the ameliorative condition of the soil in each field. Evaluated agroresources condition of the soil to conduct optimally adaptive complexes of technological operations showed that the ameliorative status of soils in all five fields and the control field is assessed as "satisfactory". The following year, after the optimal-adaptive complex technological operations and harvesting rice, re-evaluated the reclamation condition of the soil showed that as a result of soil-conservation measures on rice fields reclamation soil conditions have improved in all five fields (table 2) and evaluated as "good". Security hydrolyzable nitrogen increased by 3-5%, a movable potassium 5-7% and a movable phosphorus by 8-10%. Received 16% yield increase of rice. The cost of produced grain rice decreased by 9%. Saving energy and reducing the complexity perform reclamation activities decreased by 12-18%.
Development of optimal-adaptive routings for each reclamation condition of the soil allows the specialists of agro-industrial complex more effectively and in time to perform reclamation activities in the rice fields, to increase agroresources potential rice irrigation system, to improve the ecological situation in the rice fields, to save energy and reduce time-consuming is to be performed in wavegetarian period of soil-conservation measures, to reduce the cost and increase the yield of rice.
1. Vinogradov, B.V. Aerospace monitoring of ecosystems. - M.: Nauka. 1984. s.
2. Sergeev GA, Antos D.A. Statistical research methods for natural objects. - L.: Gidrometeoizdat. 1973. s.112, 119.
3. Andronicus V.L. Aerospace methods of studying soil. - M.: Kolos. 1979. p.75, 98, 113.
4. Vinogradov, B.V. Indicators of desertification and soil degradation. Soil science. 1993, No. 2. p.98-102.
|№ p/p||Name of indicator||The value of the index||Unit||Assessment rate|
|Level remineralizing groundwater (0-2 g/l)||0,5-1,0||m||2|
|1.5 to 2.5||m||1|
|1||The level of brackish groundwater (2-4 g/l)||1,0-1,5||m||2|
|1.5 to 2.5||m||1|
|The level of moderately mineralized groundwater (4-8 g/l)||1,0-1,5||m||3|
|1.5 to 2.5||m||2|
|The level of highly mineralized groundwater (8-16 or more g/l)||0,5-1,0||m||5|
|1.5 to 2.5||m||3|
|4||Security hydrolyzable nitrogen||3,0-4,0||mg/100 g||3|
|5||Security rolling phosphorus||1,0-2,0||mg/100 g||3|
|6||Security rolling potassium||10-20||mg/100 g||3|
|The content of units|
|0.25 to 10 mm||70<||%||1|
|The degree of soil salinization:|
|soda and mixed-soda type|
|non-saline soil||Less than 0.15||salt content, %||1|
|average||0,30-0,40||td align="center"> 3|
|salt marshes||More than 0.60||5|
|sulfate and chloride-sulfate type|
|non-saline soil||Less than 0.30||content||1|
|salt marshes||More than 2.0||4|
|sulphate-chloride and chloride type|
|non-saline soil||Less than 0,20||content||1|
|salt marshes||More than 1.20||4|
|neolocality soil||Less than 5||absorbed||1|
|salt||More than 20 (25)||5|
|Note: 1 - excellent; 2 - good; 3 - fair; 4 - poor; 5 - poor or very poor - soil degradation.|
The method of determining errores the red state soil reclamation scale rice irrigation system, includes transformation of the received image, the calculation of the area of the selected paths, characterized in that wavegetarian period using the navigation system on the map rice fields put the coordinates and the number of points sampling and measurements of the level and groundwater salinity, then perform a quantitative assessment of meliorative condition of soils rice irrigation system level and groundwater salinity, humus content, acid-base properties of soil; security hydrolyzable nitrogen, rolling potassium and fluid phosphorus; percentage content in the arable horizon of soil aggregates; the degree and type of soil salinity by assigning each reclamation criteria from 1 to 5 points depending on the extent of his influence on the drainage condition of the soil; then the sum of points reclamation criteria evaluate the ameliorative condition of the soil, and when the amount of points 8-20 meliorative condition of the soil is good; 20-30 satisfactory, 30-40 is unsatisfactory, then for each reclamation soil conditions develop process map with optimal-adaptive complex technological operations.
SUBSTANCE: method for detection of helminthes, tick eggs and protozoan oocysts in soil samples consisting in the fact that a soil sample 25 g is placed in a centrifugal test-tube 250 ml and filled with water 150 ml; the mixture is thoroughly mixed with a glass rod for 5 min or with an electrical mixer for 1 min and centrifuged for 3 min at 800-1000 rpm; water is poured off, while the test tubes are added with a three-component flotation system 150 ml containing saturated solutions of zinc chloride (2 kg of ZnCl2 or 1 l), sodium chloride (0.42 kg of NaCl per 1 l) and glycerol taken in proportions 1:1:1; the test tube is added with the same solution to form a convex meniscus, covered with a degreased glass so that it touches a fluid layer; 20-30 min. later, the glass is removed and observed under microscope; the preparation is recommended to be drawn for 2-3 times. The detectability of protozoan oocysts and tick eggs increases by 76.6 and 87.1% respectively.
EFFECT: method enables considerably increased a percentage of detected eggs of such soil-transmitted helminthes as human and swine ascarid, twice reducing time for expecting the analysis results.
4 tbl, 2 ex
SUBSTANCE: method includes assessment of the area under study, data collection and processing, while taking into account the area disturbed by the influence of man-induced and natural factors within mining allotment: open-pit field, degraded sites of plant communities in areas of mining operations, construction projects, and disturbed landscapes and roads, and with a share of the said areas more than 25% of the area under study the conclusion is given that this territory belongs to the category of stressed risk and requires necessary measures to reduce environmental stress.
EFFECT: simplification of the method, improvement of accuracy of the environmental situation assessment and determining the risk.
SUBSTANCE: when realising the method, a weight is placed on the top surface of the sample; the soil sample is converted to a pseudoliquid state; the beginning of sinking of the weight is recorded; further, the cross-section and length of the sample, pressure and volume of the stream of water over a defined period of time are measured; soil permeability is calculated from the measured values.
EFFECT: possibility of determining permeability of running soil in pseudo-liquid state by placing a weight on the top surface of the soil sample and recording the beginning of the sinking of the weight.
SUBSTANCE: photographic images of the eroded soil are taken using a cord (belt) and/or graduated scale. The obtained image is then displayed on a computer screen, where the profile of the eroded part is selected on the horizontal level and contours of the surface of the eroded soil. Further, the area of the eroded part is determined and the volume of soil lost due to water erosion is then calculated.
EFFECT: method for rapid determination of soil loss after torrential rain or snow melt, where there is fast photographic capture of the profile of the eroded soil with high speed of measuring soil loss, with low cost and high accuracy compared to existing methods.
2 cl, 4 dwg
SUBSTANCE: method to determine parameters of pillars erected in soil by the jet grouting method including arrangement of a well for the entire length of a pillar with subsequent erosion under permanent flow rate and pressure of a working solution and speed of lifting and rotation of a hydraulic monitor until formation of a pillar and determination of pillar parameters in compliance with soil properties. In process of well arrangement a soil sample is taken with a coring device with a case, with length multiple to pillar diameter, afterwards the case with the soil sample is installed in the horizontal position and under the right angle with one end is rigidly connected to a cylindrical conductor, the cavity diameter of which complies with the well diameter, and the other end is closed with a cover equipped with a metering system. In the conductor cavity coaxially to the cartridge with a soil sample there is a hydraulic monitor installed, and sample soil is washed with a working solution under permanent pressure, afterwards using the time of soil sample washing, the speed of hydraulic monitor lift is determined, as well as the radius of the given pillar section, and afterwards values of technological parameters are set for generation of a pillar with specified parameters.
EFFECT: simplified method, reduced costs, higher accuracy to detect geometric parameters of cement soil pillars along the entire depth of pillar erection depending on soil properties.
4 cl, 2 dwg
SUBSTANCE: invention relates to the field of agriculture and land reclamation. The method comprises planting in the soil of seeds of sprouted grains, their germination at constant optimal environmental conditions and measurement of guttation intensity of one-day-old seedlings. In addition, the guttation intensity is measured in these seedlings at a later age, and the ratio of the guttation intensity amount is calculated measured in addition to the guttation intensity of one-day-old seedlings. Thereat the assessment of the level of the soil phytotoxicity is carried out in accordance with the following gradation of the relative level of phytotoxicity of oil-polluted soil: the exponent IG2/IG1> 1 there is no toxicity; IG2/IG1 = 1 - a low level of toxicity, with IG2/IG1 <1, a high level of toxicity, with IG2/IG1 = 0 - a very high level of toxicity, where IG1 - is guttation intensity of one-day-old seedlings; IG2 - is guttation intensity measured additionally. The guttation intensity is measured additionally at the age of 3-4 days of seedlings germination.
EFFECT: method enables to reduce complexity and maintain the high sensitivity of the assessment.
2 cl, 3 tbl, 3 ex
SUBSTANCE: device for determining moisture content includes non-conducting unit, power supply and measuring instrument. At the bottom of the unit there is a recess and at the top the block is covered with a lid with a recess coaxial to the recess of the unit bottom. In the recesses there are contacts which contact with the measuring rod. The container with soil is put on the measuring rod. At that the container from above and below is closed with lids with slits greater than the thickness of the measuring rod.
EFFECT: application of this device enables to determine the soil moisture under field conditions with minimal labor and resources costs and to choose the best version of cultivation technology of field crops.
SUBSTANCE: device for evaluation of aggregate composition of the soil consists of water tank with a drain hole, a base frame and an electric motor, where on the base frame a platform rotated with the electric motor is mounted, on which the water tank with sections different on volume is installed. The upper section is smaller than the lower section. The bottom of the lower section is removable and is fixed with snaps. At the bottom there are circular protrusions.
EFFECT: use of this device will enable to simplify the conducting of analysis of soil aggregate composition with minimal destruction of aggregates.
SUBSTANCE: shearing stand includes a ferrule with an extractor ring for holding a soil sample, a counterweight device, a drive mechanism and the surface of a tilting table placed under the ferrule. According to the invention, the drive mechanism for moving the ferrule is in form of a two-way hydraulic cylinder with a one-way rod mounted on the surface of the tilting table, connected through a strain gauge dynamometer to the ferrule; the loading mechanism is in form of a swivelling two-way hydraulic cylinder with a one-way rod, whose chamber is connected by hydraulic lines through an adjustable choke; the table tilting mechanism is in form of a two-way hydraulic cylinder with a one-way rod, having a manometer in the head end, wherein the traction hydraulic cylinder and the tilting hydraulic cylinder of the table are connected through hydraulic distribution valves by hydraulic lines to a power supply and drainage.
EFFECT: possibility of investigating the action of intensifiers on shearing stress of materials and soil on the shearing surface while varying the angle of interaction of the soil and the shearing surface.
SUBSTANCE: disclosed is a method of determining bioactivity of soil, water, wastes and preparations based on humic substances. To this end, seeds are pre-soaked for a day in a solution of the analysed substance. The seeds are then let to germinate at 25°C for 3 days on a substrate mounted on a vertical transparent plastic container. The container is a base and a rectangular cover of equal size, which are placed in parallel and joined to each other on the entire perimeter by "button" type fasteners. The container allows for installation of a removable central horizontal partition wall for holding the substrate. Before germination, the substrate is moistened, a filter is placed on the substrate and seeds are placed on said filter in a single row along the line of the central horizontal partition wall at a distance of 1 cm from it. After germination, the root length of the sprouts is determined relative control. If the root length in the test samples is shorter than that of control samples by 20% or more, the analysed substance has a toxic effect, if the root length exceeds the control length, the analysed substance has a stimulating effect, in the rest of the cases, the analysed substance has no bioactivity or is weakly toxic.
EFFECT: method enables to conduct serial investigations, is characterised by simplicity and rapidness, seeds are exposed in a short period of time and there is no mechanical damage when determining root length.
3 dwg, 1 tbl, 1 ex
SUBSTANCE: invention relates to agriculture, in particular the cultivation of rice. Since the beginning of the growing season of rice the water supply is carried out from the distributor to the rice fields. Then, an outflow of seepage water is performed from the rice fields into the waste channels and seepage water is re-used. Weeds are mowed to the water level in the discharge canal of the irrigation system during the transition of plants from one vegetation phase to another.
EFFECT: invention enables to reduce water losses for evaporation and transpiration of irrigation water from discharge canals.
1 tbl, 1 ex
SUBSTANCE: invention relates to the field of agriculture and land reclamation. The method includes discharge and drainage outflow of seepage water, application of nitrogen fertilisers and herbicides, transferring of map and site drainage and discharge channels to the mode of backwater and return the water through a water lift. Thereat the air-heating installation is mounted at the site of conjugation of the site drainage and discharge channel and the intra-entity collector, and is used for energy conversion of the hydraulic drop in the air pressure, which is reported to the water lift to return the water.
EFFECT: method enables to reduce the number of hydro-mechanical devices per area unit of rice irrigation system, to increase the use of drainage and discharge runoff, to improve the conditions of mixing and dilution with water from the waste ditch with clean irrigation water, along with an increase in fertiliser use efficiency for rice growing.
SUBSTANCE: invention relates to agriculture, in particular the cultivation of rice. The method includes the supply of water from the distributor to the rice fields, the outflow of seepage water from the checks in the waste channels and re-use of seepage water for flooding checks. The outflow of seepage water is carried out by the use of mowing weeds from the waste channels. Mowing weeds is carried out in the period from emergence of grains of rice to the end of tillering to stem height of 0.2-0.3 m, then from the end of tillering and to coming to the phase of the tube - to the height of the stem 0.6-1.0 m, as well as in the period before tasseling the tassels to the middle of the phase of maturation - to the height of the stem 0.2-0.3 m.
EFFECT: invention enables to provide an optimum temperature mode in a rice field and reduce the irrigation rate by reducing water losses for seepage from the rice check and increase rice yield.
1 tbl, 1 ex
SUBSTANCE: invention relates to the field of agriculture and land reclamation. The method includes an autumn tillage by disking, harrowing, sowing of winter crops and wintering intercrops, their harvesting and planting rice. After harvesting of winter crops and wintering intercrops a general planning of checks planes with simultaneous repair of water-inlet and water-outlet irrigation network, restoring check rollers and roads. Then, on the checks surface a maximum layer of water is created and supported until the end of the irrigation season. Thereat the soil is maintained in a condition of maximum water capacity for the entire winter period, after which the density of the plow layer reaches 1.05-1.1 t/m3.
EFFECT: method enables to save energy capacity and reduce the labour intensity of melioration measures carried out; it does not require a spring presowing processing and agro-technical measures; to improve the quality of control of weeds, to increase yields, to reduce the cost of produced grain of rice, to improve the ecological situation in the rice irrigation system.
3 tbl, 1 ex
SUBSTANCE: method includes sowing rice seeds with their placement in soil at the depth 2.5-3 cm. After that fields are flooded with water for 3-5 days for seed soaking. Then water is drained for period of seed germination. After that re-flooding of fields with water is carried out.
EFFECT: method insures dense shoots and reduces decree of rice layering, which allows to increase rice yield and its harvesting.
SUBSTANCE: method includes preplanting treatment of seeds with a plant growth regulator. In order to enhance capacity of survival of rice, aqueous solution of Melaphen at strength of 1·10-6-1·10-9 g/l is applied as a plant growth regulator.
EFFECT: efficient increase of viability and germinating ability of the seeds, enhancement of survival capacity of rice, increase in productivity and positive impact upon technological characteristics of the products.
SUBSTANCE: this method suggests constant 10-12 cm water level during whole growing period up to rice harvesting. Herewith calurea treatment of rice is performed during the 5-6 leafs stage. This invention allows increasing waterweed (Hydrodictyon utricnlatum Pooth.) control efficiency in rice plantings during tillering stage (3-7 leafs).
EFFECT: increase of waterweed control efficiency in rice plantings.
SUBSTANCE: method ensures the facilities for active biomass growth of alga water net (Hydrodictyon reticulatum (L) Lagerh) over the water surface. Shallow work is carried out in the lea, in spring crop remains are embedded, nitrogenous fertilisers are added with the dosage 20-30 kg/ha, and then constant water sheet is made, that is kept in the period from May till August. For example, urea is added in the soil as nitrogenous fertilisers.
EFFECT: decreased level of rice fields infestation with the main weeds of boggy and gramineous type, and also with red-grained rice.
2 cl, 2 tbl, 3 ex
FIELD: plant growing, in particular, rice disease controlling process.
SUBSTANCE: method involves treating rice young crops at milky-wax ripeness phase with carbamide mixture in dose of 20-30 kg/hectare, pherazime SC fungicide in dose of 0.6 kg/hectare, and luvaram containing growth promoter in dose of 22 ml/hectare at mixture flow rate of 100 l/hectare.
EFFECT: increased efficiency in controlling of piricularia pitting rice disease at late development stages and during milky-wax ripeness stage when plant's vegetative and generative organs are simultaneously stricken by disease.
1 tbl, 1 ex
FIELD: agriculture, in particular, rice cultivation.
SUBSTANCE: method involves returning water filtered into waterway back into checks by means of water lifts which are positioned in retaining structures additionally provided on parts of waterways; returning drainage and waste water into irrigation and distribution network through additional open feeding channels. Method allows drainage and waste water volume to be effectively utilized and conditions for mixing and diluting of drainage and waste water with pure irrigation water to be improved.
EFFECT: increased efficiency in utilizing of water from rice irrigation systems and improved conditions for utilization of fertilizers in rice cultivation.
SUBSTANCE: invention relates to the field of agriculture and forestry. In the method the soil is applied into the ground. As soil a mixture of loess loam, organic-mineral soil, peat, borofoska is used in the following content, wt %: loess loam - 35-40, organic-mineral soil - 45-50, peat - 11-12, borofoska - 0.01-0.02.
EFFECT: method enables to increase soil biological activity, to improve physical, physical-chemical, water and physical properties, to improve nutrient status of soil, as well as to use local meliorants and mixed fertilisers.
2 dwg, 2 tbl