First, the causes of soybean lodging:
1. Some varieties have higher plants and finer stalks. They are suitable for low and medium-water lands and are resistant varieties. Such varieties are prone to prolonged lodging to high water and fertilizer lands. Plant density is too large.
2, poor wind transmission, plant stems thin, high and not strong, easy to cause lodging. If the soybeans sown are sown, the cultivator is not good in cultivating and the soybean roots are stunted, and it is easy to fall down.
3, seedlings are not enough, too much soil nitrogen, will cause plants to grow and lodging.
4. Soybean branches and flowering periods are accompanied by drizzle and rain, plant growth, or late storms, which can also cause lodging.
Second, prevent lodging measures
First, appropriate varieties should be selected according to land use. For land above medium- and high-fertilizer, varieties with thick culms, slightly shorter plants, and resistant to fertilizer should be selected. Closely planted. Appropriate sowing density can enable soybeans to make full use of light energy and fertility, grow robust and resist lodging. In general, the plants are compact, and the main stem pods and the early-maturing varieties are suitable for close planting. Areas with fertile soil or high fertilization levels should be sparsely planted; areas with poor fertility or low fertilization levels should be denser. According to the demand of soybeans on NPK, combined with the results of soil determination, the application amount was calculated and rationally applied to ensure the requirement of N, P, and K in each growth period of soybeans. The growth was robust and lodging was not easy. Timely cultivating earth. The cultivator can prevent weeds, improve ventilation, and enhance nodule vitality. According to the growth of local soybeans, weather trends, etc., appropriate application of plant growth regulators.
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