Sweet potato in the late growth stage
In the late growth stage of sweet potato, reasonable fertilization can prevent premature senescence of the plant, maintain the assimilation ability of the leaves, and promote the transport of nutrients to the roots, thereby increasing yield.
After the foliar fertilizer sweet potato enters the late growth stage, the absorption capacity of the root system is weakened, and the leaf surface spray fertilizer can be classified. For the weak hilly slopes, plain sands or fields with premature aging tendency, 0.5% urea solution can be sprayed; for the fields with high growth potential and high fertility level, 0.2% potassium dihydrogen phosphate solution can be sprayed or 2% to 3% of superphosphate leaching solution; 0.4% to 0.5% of urea and potassium dihydrogen phosphate mixture can be sprayed on the general field, sprayed once every 7 to 10 days, a total of 2 to 3 times Each time, the spraying of fertilizer solution is 70-100 kg per mu, and the spraying time is suitable for sunny evening.
The fertilizer water is filled with 3% to 5% potassium sulphate solution or 10% to 20% of ash ash leaching solution for ridge irrigation, and the fertilizer solution is 100-150 kg per mu. For the field with premature aging trend, it can be applied with 2% ternary compound fertilizer solution.
Author: Chenmao Chun Source: Daily farmer
After the foliar fertilizer sweet potato enters the late growth stage, the absorption capacity of the root system is weakened, and the leaf surface spray fertilizer can be classified. For the weak hilly slopes, plain sands or fields with premature aging tendency, 0.5% urea solution can be sprayed; for the fields with high growth potential and high fertility level, 0.2% potassium dihydrogen phosphate solution can be sprayed or 2% to 3% of superphosphate leaching solution; 0.4% to 0.5% of urea and potassium dihydrogen phosphate mixture can be sprayed on the general field, sprayed once every 7 to 10 days, a total of 2 to 3 times Each time, the spraying of fertilizer solution is 70-100 kg per mu, and the spraying time is suitable for sunny evening.
The fertilizer water is filled with 3% to 5% potassium sulphate solution or 10% to 20% of ash ash leaching solution for ridge irrigation, and the fertilizer solution is 100-150 kg per mu. For the field with premature aging trend, it can be applied with 2% ternary compound fertilizer solution.
Author: Chenmao Chun Source: Daily farmer
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