Method for growing of rice

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.

2 dwg

 

The invention relates to agriculture, particularly the cultivation of rice.

There is a method of rice irrigation, including the use of recycled water discharged to surface checks (ed. St. USSR №1115665, CL A01G 25/02, 1984). The method assumes that local distributors and card sprinklers are used at the same time and by dumping, which is achieved by using control structures. Mobile pumping station located at the beginning of the precinct of the sprinkler supplies water to the dispenser with further dilution of its net irrigation water and its supply to the sprinklers. Drainage network consisting of card drains and district collectors, drains prefiltermessage water from checks.

When irrigation water saving due to reuse of discharged water by the disadvantages of this scheme are the following provisions:

- significant capital and energy costs when submitting drainage and wastewater for irrigation mobile pumping units, requiring fuel and lubricants;

- additional construction costs and complexity in the operation of the regulatory structures.

Also known rice systems "Kuban" and "Krasnodar" (see Adhemar, Assageway, Avierinos "rice Irrigation systems. -M.: Kolos, 1994, p.39, 41). System when a difference (in si is the subject of "Krasnodar" no sprinklers and a card discharge channels last order) have local distribution, precinct discharge channels, irrigation areas, consisting of checks, and similar hydraulic structures on canals and roads.

The lack of data structures rice systems is that not ensured resource-saving technology of rice cultivation (reuse of drainage and wastewater).

Also known is a method of growing rice (RF patent No. 2138946, CL A01G 16/00, 9/00, AS 7/00, AV 79/02 - authors taken as the prototype of the"), including drainage outflow seepage, application of nitrogen fertilizers and herbicides and translation card release channels in the mode of backwater where prefiltermessage of checks in the card discharge channels water return back to checks by auxiliary vodopodyomnaya.

Under this system of rice cultivation conserve irrigation water, due to the replenishment checks water from the card release channels along with the efficient use of fertilizers and herbicides.

However, the proposed scheme reuse runoff does not allow to fully exploit the resource drain-waste runoff. Use only filter runoff, profiltrovavshih in the card discharge channels along one side of the cheque, directly adjacent to the card sprocname channel. And also, when using waste flow for the accumulation of discharged water can Exec Lisovets only a small capacity card release channels. The disadvantage of the proposed scheme are also adverse conditions mixing in chirk clean and drainage and vent water (drainage and waste water are concentrated in the area of their receipt in the receipt near vodopodyomnaya and may cause local increase of salinity in check).

The volume of drainage-discharge flow can be increased considerably if the accumulation of filtration and waste runoff optimal use of along with cartolini drainage channels precinct discharge channels. In this case, will significantly increase the area of seepage inflow and cumulative volumes of waste flow.

Technical solution to the problem is to increase the use of drainage-discharge of runoff and improve the conditions of mixing and dilution water discharged from network net irrigation water in the repeated use of drainage and waste runoff in the lower level of the rice irrigation systems in addition to increasing the efficiency of use of fertilizer in rice cultivation.

The task is achieved in that in the method of rice cultivation, including translation of the card release channels in the mode of backwater and return water prefiltermessage in the card discharge channels back in cheques by auxiliary vodopodyomnaya, according to the invention vodopodyomnaya set in advanced Ostrava is held on precinct outlet ditches retaining structures and drainage and waste water in irrigation return-distribution is additionally arranged an open inlet channels.

The novelty of the claimed proposal due to the fact that under this system of rice cultivation is achieved by the most efficient use of the volume of drainage and waste runoff in the lower level of rice systems.

According to the patent and scientific literature is not detected is similar to the claimed combination of features that allows us to judge about the level of invention proposals.

The invention is illustrated by drawings, where figure 1 shows a diagram of a rice irrigation system "Kuban", and figure 2 shows a diagram of a rice irrigation system "Krasnodar" indicating placements offline vodopodyomnaya and regulations additionally arranged channels for supplying the drain-waste runoff into the best sites dilution.

The method of rice cultivation is carried out as follows.

In rice irrigation systems shown in figures 1, 2 (figure 1 - system "Kuban", figure 2 - system "Krasnodar") through the filter from the distribution channels of different order 1, 2, irrigation canals 3 and the rice paddies 4 is the inflow of drainage water in precinct discharge channels 5 card and drainage-discharge channels 6.

Since the onset of tillering of rice used network mode backwater. The rice system "Krasnodar" in afflux fully translated plots the e discharge channels 5. The rice system "Kuban" in the backwater partially translated precinct discharge channels 5 by distribution channel 1 and fully translated card discharge channels 6.

Afflux of on-farm reservoirs 7 and, specifically, for a system of "Kuban" part of the precinct discharge channel 5 from the reservoir 7 is not created.

Work drawdown network in this mode provides the hydraulic differential in locations Autonomous hydrocystoma of vodopodyomnaya 8 installed in addition have a retaining structures 9.

Offline vodopodyomnaya 8 can be reused up to 30% of the drainage flow. The return of the drainage flow of vodopodyomnaya 8 from additionally arranged retaining structures 9 in the irrigation channels 2, 3 are carried out by additionally arranging an open inlet channels 10. As vodopodyomnaya may apply piston offline vodopodyomnaya (RF patent 2117093) or offline vodopodyomnaya other structures.

Additionally we organize open inlet channels 10 are laid in the trench and serves drainage and vent drain:

- "Kuban" from additionally arranged retaining wall 9 on the discharge channel 5 along the checks 4 and the separation roller 11 to the end of the irrigation channel is 3 and it is next to the distribution channel 2;

- "Krasnodar" from the end of the precinct discharge channel 5 along the rice paddies, then dividing cheque roller 11, and then along the distribution channel 2 to the point of placement of the first check discharge at the beginning of the distribution channel 2 (near the point of its exit from the distribution of channel 1; at high terremoti checks the length of the channel 10 can be reduced).

The water level in the open inlet channel 10 must command is 0.1-0.2 m above the water level in the channels 2, 3.

Thus, drainage and discharge flow is delivered to the irrigation channels 2, 3, where dilution of the net irrigation water before re-submission in 4 cheques. This ensures that the salinity decrease served in cheques drainage and waste runoff and prevents suppression of the growth of rice under irrigation water with high concentrations of salts.

Recommended technological discharges during the growing period of rice with 4 checks, drained cartolini drainage channels 6 and precinct drainage channels 5 to carry out alternately. During the period, while the discharge from one of the check 4, discharge channels 6, 5 filled and waste water from them is served by vodopodyomnaya 8 in the irrigation network.

The method of rice cultivation, including translation of the card release channels in the mode of backwater and who the rat waters, prefiltermessage in the card discharge channels back in cheques by auxiliary vodopodyomnaya, characterized in that vodopodyomnaya set in additionally arranged on precinct outlet ditches retaining structures and drainage and waste water in irrigation return-distribution is additionally arranged an open inlet channels.



 

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