Phosphate fertilizer application method

Phosphorus fertilizer is generally used as base fertilizer. Under the same conditions, the higher the available phosphorus content in the soil, the lower the fertilizer efficiency of phosphorus fertilizer. The suitable dosage range of phosphorus fertilizer for several main crops in general phosphorus-deficient soil: grain crops, sweet potatoes, potatoes, cotton per mu (P2O5) (4-6) kg, peanut, rapeseed, soybean, jute, tea tree (3-5) kg, watermelon (2-4) kg, tobacco (1-3) kg, sugarcane (6-8) kg, Each fruit tree is (0.2-0.3) kg. When the crops are found to be deficient in phosphorus, spray phosphorus fertilizers on the leaves to allow phosphorus to enter the crops through the stomata or cuticles on the leaves. The concentration of 2% to 3% can be used for grass crops such as rice and wheat, and the concentration of 1% can be used for rape and vegetables. Potassium dihydrogen phosphate can also be used at a concentration of 0.25%, spraying after the dew dries up in the morning or before the dew falls in the evening on a sunny day, which has a significant effect of increasing production.