The way to combat algae in rice cheque

 

The invention relates to agriculture, particularly the cultivation of rice. The method includes spring tillage, planting and flooding cheques water. In the autumn of conduct under-winter plowing with a drug reservoir for sealing algae under a layer of soil. In the spring after seeding creates a layer of 10-12 cm of water and ensure that water temperature in check was the 20oC and above. Such a layer to keep the phase of tillering. The proposed technology will improve the efficiency of the fight against algae and increase the productivity of rice crops. 3 table.

The invention relates to agriculture, in particular to methods of algae control order Cladophora check on the rice.

The known method of algae control, including spraying a 10% solution of copper sulphate places of a mass congestion (see, for example Tulyakov H. F. Rice in the North Caucasus. Rosstat. 1973, S. 116). The disadvantages of this method are: low productivity, consumption of copper sulphate, which is toxic and is excluded from the list of drugs used in rice.

The known method of algae control, consisting in the discharge water from the check and drying of the soil before drying algae (see, napryagov. M, ear, 1976, S. 12). The described method is adopted as a prototype.

The disadvantages of this method are: low efficiency algae control order Cladophora, because they remain viable after drying and re-grow back after flooding, increased consumption of irrigation water, clogging proselkami, reduced yield.

The problem solved by this invention is to increase the effectiveness of anti-malware as algae of the order Cladophora on the rice crops.

This object is achieved in that in the autumn of conduct under-winter plowing with the turnover of the reservoir, and after seeding creates a layer of 10-12 cm of water and maintain it until sprouts appear above the surface.

Optimal water temperature for the growth of Balls from the 16oWith up to 18oSince at higher temperatures the growth of algae stops. The optimal water temperature for Balls observed in flooded fields in April-may-June and therefore Cladophora starts early vegetation period and to the beginning of the germination of rice seeds algae form a biomass, preventing the emergence of seedlings of rice over the surface of the water. In order to stop the growth of algae in the spring must söke 10-12 see Only when the sprouts of rice over the surface of the water to increase the depth of flooding. This helps to eliminate the negative impact of the Balls on rice.

A specific example of the way In October on the receipts, which were discovered breeding algae Balls held under-winter plowing to a depth of 0.20-0.25 m plough PLN-4-35. In April - disking disc harrow BDT-2,5 A. 2-3 days spent alignment of the ridges and the consolidation of the soil frame - scrapers with ribbed rollers. The next day, the seeding with fertilizer held drill STN-2,8.

Simultaneously with the sowing updated peripheral cheque groove canlocate MK-17 and sliced temporary drainage furrows. Then spent the Bay cheque water for 3 days to a depth of 10-12 cm Then controlled the water temperature using measurements and adjusting the layer of water. The first measurement was done on the first day of the full flooding the surface of the check, and subsequent measurements every 3 days.

1st measure the water temperature 17oWith the 2nd measurement - water temperature 20oC.

Other measurements - temperature water 21-22oC.

In process of absorption into the soil and water evaporation conducted additional Bay to neophobe water raised to the phase of tillering.

As control was used prototype method.

Spring held tillage to a depth of 0.14-0.16 m of no-till plow PCN to 3.2. Then discowale disc harrow BDT-2,5 A. Leveled combs and primitively soil-frame-scrapers with ribbed rollers. The next day there was sowing with fertilizer drill STN-2,8, update peripheral grooves and cuts temporary drainage furrows. Then filled in the cheque water to a depth of 20-25 cm In the period of seed germination was performed intermittent discharge of water for 2-3 days prior to the drying of the soil surface. After this was carried out by the secondary Bay at a depth of 20-25 cm

The results of the tests are presented in table. 1.

The proposed method allows to reduce to a minimum (92,3%) number of algae and to increase the yield of rice by 24.8 kg/ha.

In table. 2 presents a comparative analysis of the characteristics of novelty.

In table. 3 - analysis of the essential features that create a positive effect.

Claims

The way to combat algae in rice cheque, including spring tillage, planting, flooding, characterized in that in the autumn of conduct under-winter plowing with the turnover of the reservoir, and after sowing rice seeds with

 

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SUBSTANCE: method involves mechanical removal of excessive contaminants from surface and reducing toxicity of contaminated soil; sowing green manure crops and perennial grasses; preliminarily removing taking soil samples from contaminated surface and separating native contaminant destructors therefrom; after mechanical removal of contaminant from soil surface, providing sequential treatment of plot soil with water-soluble humates and at least double treatment with native contaminant destructors; mellowing soil; applying lime with mineral fertilizers such as saltpeter, double superphosphate and calcium chloride. Green manure crops are sown after application of fertilizers. Method further involves grinding green manure crops, plowing into soil and covering with soil by means of covering roll.

EFFECT: increased efficiency, reliable ecologically clean restoration of soil after contamination thereof.

FIELD: agriculture.

SUBSTANCE: method involves cultivating soil by forming ridges after germination of weedage and providing subsequent cultivation procedures by breaking formerly formed ridges and forming new ridges; providing presowing soil treatment by embedding germinated weedage, stubble and other plant remains axially of ridges and simultaneously introducing microbiological humus-forming preparation; 20-40 days after introducing of humus-forming preparation (according to first version), breaking formerly formed ridges and forming new ones and simultaneously sowing late crops; according to second version, providing sowing of farm crops simultaneously with embedding of germinated weedage and introducing of humus-forming preparation. Methods allow total of active soil temperatures during presowing period to be increased owing to composting effect.

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FIELD: agriculture.

SUBSTANCE: method involves sowing sorts of soya with different ripening time; simultaneously sowing sorts of soya of at least four different ripening time in adjacent rows, with early ripening sorts being combined with late ripening sorts; setting seeding norm for early ripening sorts of soya in the range of 600,000-650,000 pieces/hectare and for late ripening sorts of soya in the range of 400,000-450,000 pieces/hectare.

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