Soybean meal is unrealistically occurring in summer soybeans for many reasons, such as improper proportions of N, P, K, varieties, high density, lack of trace elements, pests, and other factors that can cause the grain to fail to form. pod.
Can start from the following aspects:
1. Increase organic fertilizer and phosphorus and potassium fertilizers. Single - use of nitrogen fertilizer, prone to madness, causing false and unrealistic. After the emergence of summer soybeans - must be applied - quantitative organic fertilizer and ternary compound fertilizer. In the case of severe fields, application of P and K fertilizers should be added to reduce the amount of earthworms.
2. Spray foliar fertilizer. The lack of boron in soybeans can easily lead to blasphemy. The production should be sprayed with 0.1%-0.2% borax, 0.5%-1% urea solution every 10 days after the initial flowering period of soybean, sprayed 2-3 times in succession; spraying potassium dihydrogen phosphate at full bloom 0.2%- 0.5% can not only prevent the defermenting of plants, but also prevent worms. Foliar fertilizer should be sprayed on a cloudy or sunny afternoon without wind, with spraying on the back of the leaves.
3. Reasonably irrigated. In the period of soybean grain blasting, in the case of drought and lack of soil moisture, it should be timely irrigated to prevent drought, in order to meet the demand for water in soybean grain, reduce earthworms.
4. Pay attention to pest control. From the beginning of soybean seedling stage, we must pay attention to the occurrence of aphids and control them early. During the flowering stage, special attention was paid to the prevention and control of downy mildew, gray spot disease, soybean borer, bean pod, and pod moth, which increased the rate of scarring.
5. Change the rotation. The establishment of a reasonable soil cultivation system to avoid double cropping can prevent soil nutrient imbalance, reduce the damage of pests and weeds, and reduce the emptying rate.
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