Direct cultivation technique of rapeseed "free deep tillage"

With the transfer of rural labor force, labor, abridged, efficiency of oilseed rape "Mianshengeng" live the new high-yield cultivation techniques highly favored farmers, has been promoted in Henan Province Sheqi and was expanding year by year trend. After extensive testing and demonstration, the application of this technology is more than 60 yuan to 80 yuan for the cost of transplanting seedlings after deep tillage , and the yield per plant is 6 % to 10 % higher than that after deep tillage .

 

Rapeseed now "Mianshengeng" technical points as follows: selection of seed generally used in two-hybrid No. 5, No. 6 double hetero, high quality canola varieties Yuyou No. 4, No. 1, etc. EARLY low. Appropriate early sowing and early sowing are the prerequisites for high yield and stable yield of live rapeseed. According to the experiment, generally live rapeseed oil region suitable sowing period in late September to October 15, not later than October 20, the best sowing period September 25 to October 10, after 15 October, sowing yield Showing a downward trend. The sorghum is harvested immediately after ripening, and the stalk is slashed, and the weeds can be sown after weeding. In late September sowing, acres of seeding rate is zero. 2~0 . 25 kg, mu seedlings 0 . 9~ 10,000 plants; planted in early October , the amount of acres is 0 . 3~0 . 4 kg, mu seedlings 1 . 20,000 plants.

 

Seeding method: artificial or mechanical drill, promote the expansion of the line, the average row spacing of 40 ~ 50 cm, is conducive to improve the ability of ventilation and digestibility of nitrogen in the middle and late stages, and facilitate field operations such as pest control. Specific method: per acre with 6~7 kg of granulated uniform nitrogen, phosphorus and potassium containing 15 % ternary compound fertilizer for sowing. For example, mechanical seeding, seed fertilizer can only use compound fertilizer, and requires small granulation, sowing as much as possible, no need to seedling after emergence. Timely spraying " free-tillage " biological preparations can be sprayed with " free-till " soil biological preparations, using 200-300 grams of " free-plowing " biological conditioning agent , and spraying the ground evenly on water 45-100 kg. In the case of lameness, the soil layer can be 15~45 cm in 10~45 days , and the deepest can reach 80 cm. It can promote the development of the roots of the live rapeseed, the main roots are deep into the soil, and the ability to grow rapidly, drought, drought, cold, and lodging is greatly enhanced. The peasants called " free ploughing " as " the deep cultivator that does not burn oil, the invisible cistern. " The principle of scientific fertilization " free deep ploughing " live rapeseed fertilization is "the base fertilizer is full and the topdressing is early and light, and the wax fertilizer is matched with phosphorus." , potassium, boron " . Before the sowing, the application of high-quality organic fertilizer 3000 kg, diammonium phosphate 5~8 kg, urea 10 kg, potassium chloride 10 kg, sprinkled into the soil. Lightly apply seedling fertilizer, use 250~500 kg of human and manure plus urea 3 kg, 0 . 15 kg of borax is poured over again. The wax fertilizer is generally applied in advance in mid- December , and the seedling surface is covered with warm semi-fertilized organic fertilizer or grass ash, and the seedling root is applied. Due to the poor growth potential and weak root development in the early stage of rapeseed, the management should focus on promoting early seedling growth and strong seedling wintering. Combined with cultivating 45 % of ternary compound fertilizer, 10 kg, and shallowing the roots of the soil. Heart, its depth is not to cover the roots, shallow cover heart. Pest control in the seedling stage focuses on the control of aphids and cabbage caterpillars. It can be controlled by the pollution-free biological pesticide Shengzhifeng insecticide 1#2500~3000 times.

 

In the prevention and control, we insist on the strategy of " grasping the right period, taking the initiative, and using the medicine twice during the flowering period " . Specific grasp early flowering, flowering about 25% when the main stem, usually in late March, mu # 1 Green Hang 600 times or 70% thiophanate 800 times, plus 0. 1 % alizarin 481 lactone 7500 times liquid spray, can also use 35 % sclerotium light 75 ~ 100 grams or 25 % 100 grams of emulsifiable concentrate 50 ml, spray 50 kg of water , spray again every other week, control effect can be More than 95 % achieve the triple effect of disease prevention, grain increase and weight gain.

 

Source: Food Partner Network

 

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