How to grow summer soybeans?

How to grow summer soybeans? Please introduce the method of summer soybean cultivation can refer to the following methods: 1. Irrigation before sowing: for plots with poor soil moisture, if there are irrigation conditions, irrigation can be done once before sowing to facilitate seed germination after sowing. Field closed weeding was carried out combined with irrigation. two。 Select seeds: select seeds with good sowing quality, high yield and stable yield. Artificial grain selection was carried out before sowing, and diseased grains, worm-eaten grains, small grains, blighted grains and broken grains were sorted out. At the same time, the hybrid seeds of different varieties should be eliminated according to the inherent typical characteristics of this variety, such as grain shape, grain color, seed size, navel size and color depth, so as to improve seed purity and germination rate. Strive to sow the whole seedling to achieve evenness, evenness and strength of the seedling. 3. Seed treatment: in order to control grub, ground tiger, root rot and other diseases and insect pests at seedling stage, phoxim or carbendazim can be used to treat seeds. Rhizobium can also be used to mix seeds, if rhizobium mixed seeds can not be mixed with pesticides and fungicides. 4. Sowing date: early sowing of summer soybeans is very important because of the short growing season. Sowing too early and too late is disadvantageous to the growth and development, yield and quality of soybean. Sowing at the right time, the seedling preservation rate is high, the seedling emergence is neat, robust, the growth and development is good, the stem is sturdy. Sowing too late, the temperature is high, but not strong, if the soil moisture is not good, the seedlings will emerge unevenly. 5. Sowing method: sowing soybeans in summer are mostly sown after wheat harvest, and some soybeans are interplanted in wheat rows before wheat harvest. Interplanting is usually sown in late May (10 days before wheat harvest). Summer direct seeding plots should pay close attention to soil preparation, watering and sow immediately after wheat harvest. In the case of labor shortage, it is generally in the form of harvesting wheat, killing stubble and sowing soil moisture. If the soil drought is serious, it should be watered immediately after sowing to facilitate seedling emergence. 6. Reasonable close planting: reasonable close planting is to correctly handle the relationship between the individual and the group under the local and specific conditions at that time, so that the group can be developed to the maximum extent and the individual can be fully developed; so that the light energy and soil power per unit area can be fully utilized; under the same cultivation conditions, the best economic benefits can be obtained. Reasonable close planting should grasp two principles: (1) the characteristics of varieties: plant height, number of branches, leaf size and so on are closely related to density. For the varieties with large leaves with tall plants, many branches and loose plant types, the planting density should be sparse; for the varieties with short plants and poor growth potential, or the varieties with high plants but few branches and compact plant types, it is appropriate to adopt higher density. (2) Fertilizer and water conditions: when the fertilizer and water conditions of the same variety are better, the plant growth should be luxuriant and the density should be small; on the contrary, the fertilizer and water conditions are poor and the density should be high. In general, 1.2 ~ 15000 seedlings are retained in the plots with fertile soil and irrigation conditions. For the plots with medium or poor fertility, it is suitable to protect about 18000 seedlings per mu. Click to get more soybean planting technology click to get more grain and oil crop planting technology