How to distinguish potassium sulfate from potassium chloride?

How to distinguish potassium sulfate from potassium chloride? Please introduce in detail the identification methods of potassium sulfate and potassium chloride can refer to the following methods: because the price of potassium chloride is lower than that of potassium sulfate and can not be used in crops that avoid chlorine, so in order to correctly distinguish and use these two kinds of fertilizers, we should pay attention to: first, buy potash fertilizer first with the eyes, whether the appearance is consistent. Second, look at the bag logo implementation standard, potassium sulfate implementation of the Ministry of Chemical Industry issued HG/T3279---19190, potassium chloride implementation of the national standard GB6549---1986, so in the process, the detection method is different; third, can not simply consider the price, mainly depends on its nutrient content. The problem of potash fertilizer is quite serious, and there are many unqualified products, so when buying, you should ask the dealer for the inspection report of the product, and you can consult the local soil and fertilizer station or fertilizer quality inspection department. The appearance of potassium sulfate is white or colored crystals or particles. The characteristic is that the hygroscopic small storage room is not suitable for caking and is easily soluble in water. It is suitable for all kinds of crops and can be used as base fertilizer, topdressing, planting fertilizer and extra-root topdressing. The general amount of base fertilizer per mu is 10~12.5kg. Potassium can generally be absorbed by the soil and will not be lost, but the measure of "a small amount of meals" should be taken on the sandy soil with poor fertilizer conservation ability. Generally, it has the best effect on potassium-loving crops such as potatoes, melons and so on. Potassium chloride has a white or yellowish crystal appearance, sometimes containing iron salts and showing red. It is soluble in water and is a high concentration of available potash fertilizer. Can be used as base fertilizer, topdressing, base fertilizer per mu 8~10kg, topdressing per mu 5~7.5kg. The scope of application is smaller than potassium sulfate, pay special attention to avoid chlorine crops, such as grapes, potatoes, tobacco and other crops can not be used. In addition, potassium chloride is not suitable for saline-alkali soil, but chloride ion in potassium chloride can promote photosynthesis and fiber formation, especially for hemp and other fiber crops. Click to get more nitrogen, phosphorus, potassium application techniques click to get more chemical fertilizer application techniques