Soybean pods do not mean that after the pods are formed, the grains can not form normally, resulting in the phenomenon that the pods are empty. The summer sowing soybean pods are particularly serious. There are many reasons for the unreality of soybean pods, such as differences in varieties, excessive density, improper ratio of nitrogen, phosphorus and potassium, lack of trace elements, climatic factors, pests and diseases, and repeated years of stagnation, etc., can cause the grain to not bulge and form cockroaches. pod. To prevent summer soybean pods in production, it is necessary to start from the following aspects:
Rotating and establishing a reasonable soil tillage system to avoid heavy planting can prevent soil nutrient imbalance, reduce the harm of pests and weeds, and reduce the openness rate.
The application of organic fertilizer and phosphorus and potassium fertilizer alone uses nitrogen fertilizer, which is prone to madness and causes pods to be unreal. After the emergence of summer soybeans, it is necessary to apply a certain amount of organic fertilizer and ternary compound fertilizer. Phosphorus and potassium fertilizer should be added to the field where the pods are serious, and the pods should be reduced.
Reasonable irrigation should be timely irrigated and drought-proof in the case of drought and soil moisture in the case of drought and soil moisture, to meet the demand for water in the soybean grain period and reduce the pods.
Spraying foliar fertilizer, soy deficiency, is easy to cause pods. In production, 0.1%-0.2% borax, 0.5%-1% urea solution should be sprayed every 10 days after the initial flowering period of soybean, and even sprayed 2-3 times; spraying potassium dihydrogen phosphate 0.2%-0.5 during full bloom period % can not only prevent the de-fertilization of plants, but also prevent the pods. Foliar fertilizer should be sprayed on a cloudy, cloudy day or sunny afternoon, with sprayed leaf backs.
Pay attention to the prevention and control of pests and diseases from the beginning of soybean seedling stage must pay attention to the occurrence of aphids, prevention and treatment should be early. In the flower pod stage, special attention should be paid to the control of downy mildew, gray spot, soybean borer, pea pod and bean hawk moth to increase the pod formation rate.
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