What problems should be paid attention to when applying potash fertilizer?

What problems should be paid attention to when applying potash fertilizer? What is the effect of applying potash fertilizer? Please introduce the following problems to be paid attention to when applying potash fertilizer: first, pay attention to the soil condition. In general, the effect of potassium fertilizer application was obvious when the soil available potassium was lower than that of 80mg ∕ kg, but little or no application of soil available potassium in 80~120mg ∕ kg. In addition, the content of available potassium in sandy land is often low, so potassium fertilizer should be increased, while the content of available potassium in clayey soil is often high, which can be applied less or not. Second, look at the varieties of crops. For potassium-loving crops such as legume crops, potato crops, sugar beets, potatoes, watermelons, fruit trees and cotton and linen, it is necessary to increase potassium fertilizer and increase production, while crops that require less potassium should be applied cautiously. Third, the application time of potash fertilizer is reasonable. In the rotation of winter wheat and summer corn, potassium fertilizer should be given priority to corn, because the yield-increasing effect of potassium application of corn is higher than that of wheat. Fourth, the application of potash fertilizer varieties is reasonable. Potassium sulfate is better for fruit trees, tobacco and sugar crops, potassium chloride is suitable for fiber crops, and cheaper potassium chloride can be applied to field crops except a few crops that are sensitive to chlorine. Fifth, the amount of potash fertilizer is reasonable. Although potash fertilizer has many advantages to the production of crops, excessive application of potassium also has harm: excessive application of potassium will not only waste valuable resources, but also reduce the absorption of cations such as calcium by crops. cause "rot heart disease" of leafy vegetables, "bitter pox disease" of apples, etc., but also cause soil environment and water pollution, weaken crop production capacity. Click to get more nitrogen, phosphorus, potassium application techniques click to get more chemical fertilizer application techniques