The application of farmyard fertilizer is learned
The appearance of potassium sulfate is white or colored crystals or granules. It is characterized by small moisture absorption, is not easy to agglomerate when stored, and is easily soluble in water. Suitable for a variety of crops, can be used as base fertilizer, top dressing, and top dressing. Potassium can generally be absorbed by the soil and will not be lost, but the principle of “few meals†should be adopted on sandy soils with poor fertilizer retention. It is generally best to use it on potatoes, melons and other high-potassium crops.
Potassium chloride is white or light yellow in appearance, and sometimes contains iron salts in red. Soluble in water, it is a high solubility of the available potassium fertilizer. For basal fertilizer and topdressing, the scope of use is correspondingly smaller than that of potassium sulfate. Special attention should be paid to the careful use of sensitive crops such as grapes, watermelons, potatoes, sweet potatoes, tomatoes, and peppers in order to avoid “chlorine pollutionâ€. In addition, potassium chloride is not suitable for use in saline-alkali soils, but chloride ions in greenery potassium promote photosynthesis and fiber formation, and are particularly suitable for fiber crops such as cotton and hemp. To correctly distinguish and use these two kinds of fertilizers, it should be noted: When purchasing potash fertilizer, first look at whether the appearance conforms to the above explanation; secondly, look at the bag knowledge, implementation standards, and the implementation of potassium sulfate is the original HG/T3279-1990 promulgated by the Ministry of Chemical Industry. The implementation of potassium chloride is the international GB6549-86; in addition, it is not possible to consider only the price, which mainly depends on its nutrient content.
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