Choose potash fertilizer according to the actual situation and local conditions

The principle of selecting potash fertilizer varieties is　

(1) From the perspective of soil conditions, potassium sulfate should be used for sulfur-deficient soils; potassium sulfate should be used for saline-alkali soils, and potassium chloride should not be used to avoid increasing the content of soil chloride ions.　　

(2) From the perspective of crops, potassium sulfate should be selected for crops that are sensitive to chlorine, such as tobacco, potatoes, sweet potatoes, sugar cane, tea trees, and oranges. Potassium sulfate should also be used for sulphur-loving crops, such as onions and garlic.　　

(3) From the perspective of fertilizer prices, potassium sulfate is more expensive than potassium chloride, so in general, potassium chloride should be used as much as possible except for special reasons and requirements.

(4) From the perspective of irrigation conditions, in areas with irrigated or rainy conditions, as long as soil drainage conditions are good, potassium chloride can be used for most crops, which will not have adverse effects on yield and varieties.