How to prevent soybean lodging?

The lodging in the later growth stage of soybean affects the yield and quality of soybean and is not conducive to harvest. The reason should first of all consider whether the variety is right or not. Some varieties have higher plants and thinner stems, which are suitable for the plots with medium and low water and fertilizer, and belong to barren-tolerant varieties. The plant density is too high, the field ventilation and light transmission is poor, the plant stem is thin and weak, tall but not strong, which is easy to cause lodging. In order to prevent the lodging of soybean, the appropriate varieties should be selected according to the soil fertility, and the varieties with stout stalks, shorter plants, lodging resistance and fertilizer tolerance should be selected in the plots above medium and high fertilizer. The sowing rate should be moderate, and the seedlings should be planted in time after emergence, so as to create a population with reasonable density. The high-fertilizer land should squat seedlings according to the seedling condition at the seedling stage, and the soil can be cultivated in combination with the middle tillage. Pay attention to the reasonable collocation of nitrogen, phosphorus and potassium fertilizer, and fertilize and irrigate reasonably according to the seedling condition and weather. For prosperous soybean, growth regulators such as triiodobenzoic acid (2,3,5-triiodobenzoic acid), Zengchengling (chemical name 4 ~ sulfophenylchloroacetic acid) and paclobutrazol (also known as chlorbutrazol) were sprayed at the early flowering stage. it can not only control the overgrowth and prevent lodging, but also increase yield. Hitting the top at the right time can also play the role of dwarfing and sturdy stalks to prevent toppling.