1. Irrigation before planting: For sites with poor waterlogging conditions, if there are irrigation conditions, irrigation may be conducted before sowing so as to facilitate seed germination. Field irrigation and weed control are combined with irrigation.
2. Select seeds: Select seeds with good sowing quality, high yield and stable yield. Artificial seeding is performed prior to sowing, and the diseased grains, insect grains, granules, pod grains and broken petals are sorted out. At the same time, according to the inherent characteristics of the species, such as grain type, grain color, seed size, size and color depth of the navel, the mixed seeds of different varieties were removed to improve the seed purity and germination rate. Strive to broadcast all seedlings to reach Miao Qi, Miao uniform, Miao Zhuang.
3. Seed treatment: In order to prevent disease, pests such as earthworms, ground tigers, and root rot, seed dressing with phoxim or carbendazim can be used. Rhizobium seed dressing can also be used, if the rhizobial seed dressing can not be mixed with insecticides and fungicides.
4. Sowing date: Summer sowing soybeans due to a short growing season, early sowing is very important. Sowing too early and late is not good for soybean growth, yield and quality. Timely sowing, high seedling maintenance rate, neat emergence, robustness, good fertility, and thick stalks. Seeding late, the temperature is faster than seedlings, but it is not robust.
5. Seeding method: Summer sowing soybeans are mostly planted after wheat is harvested, and some are sown in wheat rows before the wheat matures. Interplanting is generally sown in late May (7-10 days before harvest). The summer live plots should be settling, watering, and sowing immediately after harvest. In the case of labor stress, it is generally adopted in the form of collecting wheat and killing crops while looting crops. After the drought in the soil is seriously sowed, it should be watered immediately to facilitate seedling emergence.
6. Proper and close planting: The rational and close planting is to properly handle the relationship between individuals and groups under the local and specific conditions at that time, so that the groups get the maximum development, and the individual is fully developed; so that the light energy and the land power per unit area are obtained. Make full use of; under the same cultivation conditions, you can get the best economic benefits. Rational and dense planting must grasp two principles:
(1) Variety characteristics: Plant height, number of branches, and leaf size are closely related to the density. Where plant height, branching more, plant type loose leafy varieties, planting density should be thin; plant dwarf, growth potential varieties, or plants are higher, but fewer branches, plant type compact species, should Use a larger density.
(2) Fertilizer and water conditions: When the fertilizer and water conditions of the same variety are good, the plant growth is lush and the density should be small; on the contrary, the fertilizer and water conditions are poor and the density should be large.
The fertile soil and land with irrigation conditions generally have between 1.2 and 15,000 plants per mu. The land with moderate fertility and slightly poor fertility should be suitable for 18,000 Mu seedlings.
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