Management measures for flowering and pod stage of soybean
The main results are as follows: 1. The practice of topdressing flower and pod fertilizer shows that topdressing at flowering and pod setting stage has obvious effect on increasing flower and protecting pod, reducing shedding and increasing yield. Fertilization method: in the early flowering stage of soybean (early growth, delayed growth), 5-10 kg urea per mu. If the soil has strong fertility and the plant grows healthily, it should be applied less or not, so as not to cause the plant to grow madly, cause lodging or increase the shedding of flowers and pods. Combined with topdressing nitrogen fertilizer at flowering stage, foliar spraying phosphorus, potassium fertilizer, boron, molybdenum and other micro-fertilizer, it has a better effect of increasing yield.
2. The flowering and podding stage of drought-resistant and waterlogged soybean is the most exuberant period of vegetative growth and reproductive growth, and it is also the period of rapid accumulation of dry matter and significant expansion of leaf area coefficient. If there is not enough water, the plant will wilt. In addition, the formation of a large number of pods must have enough water, and watering during this period can increase the yield by 15-30%. The best irrigation method is furrow irrigation, small ditch irrigation until the soil is moist.
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Causes of flower and pod shedding in soybean
1. Poor ventilation and light transmittance sunlight is not only the main energy for the production and accumulation of organic nutrition, but also the main factor for promoting plant rapid development and inhibiting overgrowth. Soybean has good ventilation and light transmission, which can make the climate between plants consistent with that of the upper part of plants, reduce the humidity between plants, increase light and temperature, accelerate leaf area transpiration and accelerate the speed of nutrient transport. 2. The loss of flowers and pods in barren soil is more than that in fertile soil. The soybean with shaded branches and leaves grows more normally than the plant, and the flowers and pods of the ventilated and transparent soybean fall off.
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Management of soybean flower pod stage
Bean flower pod stage requires strong stems, thick green leaves, no spots. Field management is mainly to prevent premature aging, control excessive growth, protect flowers and increase pods, prevent shedding. 1. The flowering and pod setting period of soybean is the period when soybean absorbs most fertilizer. The yield of soybean can be increased by more than 15% by applying flower fertilizer skillfully. Soybean initial flowering stage generally every 667 square meters of urea 5-10 kg, poor growth should be more, strong growth luxuriant, should be less or not chase. Nitrogen fertilizer is applied in coordination with flowering stage, phosphorus, potassium fertilizer, boron, molybdenum and other trace fertilizers are sprayed on leaves. Generally spray twice, each time
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