Peanut in the flowering, lower needle-pod stage, in addition to spraying the fruit in the timely manner, strengthen the nutrient-directed transport, can make the fruit fruit expand quickly, high yield; and spray the phosphate fertilizer outside the root, can directly absorb the plant More phosphorus nutrients, which promote peanut flowering and pod formation. Spraying phosphate fertilizer during this period generally increases production by about 15%. Especially for soils with strong acidity, low total phosphorus content, insufficient phosphorus nutrition for peanuts, and affecting the growth and development of peanuts, spraying phosphorus fertilizer outside the roots can make up for the deficiency of soil phosphorus nutrients.
The specific spraying method is: first immersing the superphosphate in water for 15 to 24 hours, then taking the upper clear liquid, and adding water to prepare a 1% to 2% aqueous solution for filtration. Spraying should be carried out on a cloudy or sunny afternoon, and with the application of a new high-fat film 800 times liquid to improve the utilization rate of the effective components of the fertilizer, usually sprayed once every 7 to 10 days, 2 to 3 times in a row, spraying once per acre. The solution is about 100 kg.
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