Soybean drum grain foliar spray is good

When soybean enters the drum stage, vegetative growth has basically stopped, reproductive growth is in a strong period, and the organic nutrients in the plant are running to the grain in large quantities, and the grain is gradually expanding, which is a period in which soybeans accumulate dry matter.
In this period, soybeans require more phosphorus and potassium fertilizers. In this period, these nutrients are extracted from the soil below the plough layer, and the nutrient conversion and release ability in the soil below the plough layer is weak, which leads to the soybean nutrient. The demand is not compatible with the soil fertility. It is prone to undernutrition and premature aging, which has become a major factor limiting soybean high yield.
In the management of soybean drum stage, root spray fertilizer should be carried out to alleviate the contradiction between soybean fertilizer and fertilizer supply, and accelerate the accumulation, transformation and transportation of assimilation products. It can promote the transfer of nutrients to the grain, reduce and avoid the glutinous grains, promote the fullness of the grain, increase the grain weight and increase the yield.
Soybean flowering begins, and phosphorus absorption is strengthened until it reaches maturity. Potassium can mainly regulate the physiological and biochemical functions of plants, and cooperate with phosphorus in the late growth stage of soybeans to accelerate the conversion of substances into storage forms and promote grain enlargement. Boron promotes the development of pods and reduces pods and pods. Therefore, spraying 0.5% urea, 0.3% potassium dihydrogen phosphate, and 0.1% borax outside the root of soybean granules and spraying once every 7 days has a significant effect on reducing glutinous grains, increasing grain weight, and increasing yield.
Huaxian County Shang Hongyan

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