Soybean re-cultivation comprehensive cultivation techniques, including the adoption of soil cultivation, seed treatment and other technologies, so that reduced or no reduction of soybean production, so that the soybeans will not reduce production or increase production. Technical points: (1) Reasonable rotations should be minimized and appropriately greeted. In the current situation in which soybeans are unavoidably greeted, it is important to distinguish between enthusiasm and ambition, to minimize enthusiasm, and to appropriately marry. Therefore, wind-sand saline-alkaline soil areas, soil-infertile slopes, cyst nematode disease, sclerotinia, and severely rooted plots cannot be planted to meet soybean requirements. Under the circumstance of reunification, we must adhere to the principle of “satisfying and refraining from being heavy†and we can choose to plant soybeans with high levels of organic matter in Pingchuan and Erdao, and we can only replant soybeans for one year. For those plots that are developed late and have high organic matter content, although they can be appropriately weighted, they cannot be excessively long. (2) Selection of anti-cyst nematode or strong resistant varieties. (3) Reasonable farming. Rational soil cultivation can destroy the compacted layer, create good soil conditions for the growth and development of soybean roots, and can effectively reduce pests and diseases. In terms of soil cultivation, the system of soil cultivation combining loose, tipping, hoeing, and rotation is mainly used for deep-separation, and vigorously promotes the application of deep-tillage cultivation methods. To avoid the original species. (4) Increase agricultural fertilizers and rationally use chemical fertilizers. Normal plots use more than 15 tons of high-quality fertilizers per hectare. The use of more than 20 tons per hectare is applied on the barren hillside. Straw can be used to increase soil organic matter. First, straw crushed and turned directly back to the field. The crop stalks are crushed mechanically and a small amount of nitrogenous fertilizers or enzymes are applied to the soil to combine them with the soil in the fall. The second is to use a starter, an enzyme, or livestock manure to produce high-quality straw fertilizers at a certain proportion. The application of chemical fertilizer should be done with N, P and K, and soil testing and formula fertilization. According to the crop's fertilizer requirement law, soil nutrient performance and fertilizer effect, the appropriate ratio of NPK fertilizer and micro-fertilizer was proposed to determine the fertilizer type. According to the long-term application of diammonium in most blocks of Heilongjiang Province, the characteristics of soil phosphorus accumulation is more, soybean fertilizer should be properly increased nitrogen fertilizer, supplemented with potassium. At present, there are many varieties of soybean compound fertilizers or compound fertilizers, which must be combined with single-element fertilizers. According to soil test results, leaf spray or seed dressing method is used to supplement micronutrients. (5) Do a good job of prevention and control of underground pests and diseases. In recent years, there has been a trend of increasing severity of underground diseases and insect pests. Soybean seed dressings are generally used, and the ratio of drug species is 1:75 to 100, or 35% ethylthiophosphoryl or 35% methylthiophosphorus is used. 0.5% of seeds were seeded to control soybean root rot and cyst nematode and root rot. In the selection of seed coating agents, attention must be paid to the content of active ingredients. The anti-cystic worms, root maggots, and other underground pests with high carbofuran content are effective. The root rot disease with high carbendazim content is effective. Such as the prevention and treatment of root rot, seed dressing 0.5% of 50% Dufu Mixture, can also be used seed 0.3% 50% carbendazim seed dressing; focus on the control of underground pests, with dimethoate or omethoate medicine Breeding in the ratio of 1:40:400 in the ratio of 1:40:400 to control underground pests. Focus on the prevention and control of cyst nematode at the same time, the root rot, seed dressing with 2% of the soybean root bacteria preservation agent. (6) Appropriately increase the planting density, ensure the quality of sowing, strengthen field management, and reasonably water the plant.
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