What should summer soybean sow notice?

What should we pay attention to sowing soybeans in summer? Please give an introduction to sowing summer soybeans to pay attention to the following points: first, strictly close the seeds, first of all, the growth period should be suitable. If the ripening period is too early, the yield will decrease; if the ripening period is too late, it will affect the planting of the next crop; secondly, the quality should be good. Generally, the oil content of oil soybeans is more than 21%, and the protein content of high protein soybeans is more than 45%. Third, the output should be high. Fourth, the resistance to diseases and insect pests should be strong. Planting disease-resistant varieties can ensure the quality of soybean, reduce production costs and reduce pesticide residues. At present, the suitable soybean varieties in our county are Yudou 22, Yudou 25 and Yudou 29. Strict control of drying seeds before sowing, selecting sunny sun seeds for 2 days can improve the germination rate and germination potential of seeds. Pay attention to drying in a cool place, not in the strong sun or cement ground exposure, so as not to break the seed coat and affect seed germination. Third, strict time Guan Nong proverb well said: "summer beans are not early, the sooner the better." The growth period of summer sowing soybean is limited, the earlier the sowing time is, the longer the growth period is, the higher the yield is. Therefore, strive to complete the sowing before June 15. Within this range, sowing every night for one day can reduce the yield by 2.5 kilograms per mu. Fourth, strict soil preparation before sowing, combined with the application of farm manure 2-3 square meters and diammonium phosphate 15 kg, can also use 15 kg of ternary compound fertilizer or 25 kg of soybean special fertilizer as base fertilizer. Soil preparation can loosen the plough layer, turn over stubble, weeds and farm manure, promote the activity of soil microorganisms and the decomposition of organic matter, reduce the harm of diseases and insect pests, and promote plant growth. If sowing time is tight, you can use "stubble" seeder to sow seeds, do not advocate "iron stubble" direct seeding. Compared with "iron stubble" direct seeding, soil preparation and sowing can increase the yield by about 12%. Fifth, strictly control the density according to the principle that "fertile land should be sparse, thin land should be dense; early sowing should be sparse, and late sowing should be dense", the specific density should be determined. Generally use 40 cm equal row spacing planting, high yield to tackle key fields, can be used wide row 60 cm, narrow row 40 cm wide narrow row planting. The distance between plants is 13 cm. Sowing soybean belongs to dicotyledonous plant, and the ability of top soil is poor. It consumes a lot of water when it emerges. Therefore, sufficient soil moisture is required when sowing. If the soil moisture is poor, we should first irrigate and then sow, not first sow and then irrigate, strive to sow enough moisture and sow the whole seedling. Click to get more soybean planting technology click to get more grain and oil crop planting technology