First, choose good varieties Liao beans 10, Liao beans 9, and other fine seeds, and carefully selected to ensure seed purity. Second, a reasonable rotation, continuous cropping of soybeans should not be replanted and married, or plant short, serious pests and diseases, a great impact on the yield. The intercropping between soybean and high-stalk crops affected the ventilation of soybeans, resulting in long-term growth of soybeans and fewer flower buds. Corns and other crops should be selected for cornices and contiguous crops should be cleared. Third, scientific fertilization, fertilizer production to ensure soybean production, the field should be measured soil fertilization, according to the content of soil organic matter, the formulation of fertilizer. General Mushi high-quality fertilizer 3000 kg, 30 yuan compound fertilizer 20 kg as the base fertilizer, early flowering topdressing urea 8-10 kg, in the drum grain phase spray fertilizer, to meet the nutritional needs of soybeans. Fourth, fine soil preparation, timely planting seedlings can be planted at one time, a great impact on soybean production. Before the planting, mechanical extermination was used, straw was returned to the field, organic matter was increased, and the soil was carefully prepared. Early time sowing, equidistant sowing, using furrow plowing, artificial hand dressing, 3-4 tablets per hole, according to species characteristics, 8500 strains per acre seedlings - 11000 strains. Reconstructed soil about 3 cm, the same depth. Fifth, to strengthen field management 1, the implementation of chemical weeding: Soybeans after sowing after emergence, with 43% per acre 250 grams of EC50 plus 50 kg of water sprayed on the surface of the soil closed, you can also use soybean Huanglong, acetochlor and other weeding Agent. 2, appropriate time seedlings, to ensure the density: When the soybean grows 2 true leaves, should be time seedlings. According to the variety characteristics to determine the planting density, Liao Dou No. 10 series of main stem type general Mu seedlings 10000 -12000, other branches Mu seedlings 8500 -10000 strains. 3. Foliar Spraying Plant Growth Regulators: For overgrowth of soybean plants, spray 15-20ppm Chill-out liquid 30-40kg or 3-5g triiodobenzoic acid water 20kg per acre in the initial stage of soybean flowering. For the poorly growing plots of soybean plants, the growth agent Yemianbao was sprayed with 12000 times liquid and 10000 times liquid at the seedling stage and early flowering stage, respectively. Promote soybeans to increase flowering and increase soybean production by 40-60 kilograms per acre. 4. Promote seed coating technology: Soybean seed coating not only can prevent and control underground pests, but also has control effect on aphids during seedling stage. In the mid-growth stage of soybeans, aphids were sprayed with 40% dimethoate 500 times. 5. To promote the technology of dichlorvos slow-release card to control soybean borer: 50 slow-release cards per acre, immersed in 80% dichlorvos solution, and after sucking enough liquid, hung evenly on soybean plants, generally every 6-7 ridges , Hang a card about 13 meters apart. This technique is easy to operate, effective, and can reduce the insect pest feed rate by more than 15%.
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