Soybean pods require plant stems thick, thick green leaves, no spots, the focus of field management is to prevent premature aging plants and control their leggy. First, skillfully applied fertilizer. The flowering and sowing period is the period when soybeans need the most fertilizer. The flowering and applying fertilizers generally increase production by more than 15%. Soybean initial flowering time generally applies 5 to 10 kg of urea per acre, and the growth potential should be applied in a more intensive manner. With the application of nitrogen fertilizer spraying foliar potassium dihydrogen phosphate and boron, molybdenum and other trace fertilizer, generally two consecutive sprays, each with 100 grams of potassium dihydrogen phosphate per acre, 25 grams of ammonium molybdate, 100 grams of borax? Dissolve the snow with a small amount of warm water, and add 50 kg of water to spray on the stems and leaves of the plant. Second, drought relief. Soybeans have a large amount of water during flowering and are particularly sensitive to moisture. Therefore, under drought conditions, if the leaves are found to have wilted at noon, they should be flooded and drought-resistant. But do not flood flooding, otherwise easy to make the root suffocation rot, soil compaction, irrigation with a small ditch is good, so that the soil can be moist. Soybeans have poor waterlogging resistance, and are not susceptible to waterlogging. When the rainfall during the flowering season is high, attention should be paid to timely draining of gutters. Third, spray hormones. 1. Paclobutrazol. Spraying paclobutrazol can control the plant height of soybean, shorten internode length, increase stem diameter and prevent lodging, increase the number of branches per plant and the number of pods per plant, increase seed setting rate and grain weight, and generally increase the yield by more than 12%. Spraying about 7 days after flowering, good growth should be applied as early as before flowering. Use 15% paclobutrazol wettable powder 50 to 100 grams per acre. Add 50 kg water and dilute to spray evenly on both sides of the leaf. Concentration of liquid medicine should be controlled flexibly. Indefinitely clam type can be higher, and limited clam type should be lower. The good growing field should be higher, and the growing field should be lower. 2. Sodium bisulfite. Sodium bisulfite is a photorespiration inhibitor. Applying on soybeans can reduce photorespiration and nutrient consumption, improve plant type, promote the growth of soybean roots, increase the number of rhizobial bacteria, and ensure good flowering and preservation effects. %the above. Application method: Spraying once at the initial flowering stage and flowering stage, using 10 g sodium bisulfite per acre and diluting 75 kg water, choose to spray the leaves in the afternoon when the sunlight is not very strong, and you can also use photosynthetic fertilizer. 100 grams of mu and potassium dihydrogen phosphate mixture spray.
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