Potassium Fertilizer Application Method

Potassium fertilizer can be used as base fertilizer or topdressing fertilizer, and some varieties can also be used as foliar fertilizer, but the application effect of base fertilizer and foliar fertilizer is better. Potassium fertilizer is used as base fertilizer to meet the demand for potassium element during the whole growth period of crops, especially important for crops with short growth period and soil with obvious potassium deficiency. For long-growing crops such as cotton, a combination of basal application and foliar spray can be used. For sandy soil, a combination of base application and topdressing can be used. The mobility of potassium in soil is between that of nitrogen and phosphorus. When the soil available potassium content is less than 100 mg/kg/mu; the soil available potassium content is below 100-150 mg/kg, and K₂O₃%-5 kg/mu is sufficient; when the soil available potassium content is greater than 150 mg/kg When, depending on the type of crops, do not apply chemical potassium fertilizer or apply less chemical potassium fertilizer.