Correct understanding of potash fertilizer

Potassium form performance

The active ingredient of potash is expressed as the percentage of potassium oxide. With single element "potassium" (K or K2

O) The indicated amount is single element containing fertilizer; marked "K" element is high, and other elements are also "potash fertilizer". "Potassium fertilizer" is divided into binary compound potassium fertilizer and ternary compound potassium fertilizer.

According to the chemical composition of potash fertilizer can be divided into chlorine and potassium fertilizers and chlorine-free potash fertilizer. Potassium salt fertilizers are water-soluble but also contain some other insoluble ingredients.

The main potassium fertilizers are potassium chloride, potassium sulfate, potassium dihydrogen phosphate, potassium salt, potassium magnesium salt, carnallite, potassium nitrate, kiln ash potash fertilizer. Focus on potassium chloride and potassium sulfate:

Potassium chloride: Potassium oxide is 50%-60%. Potassium chloride is readily soluble in water and is a fast-acting fertilizer that can be directly absorbed by plants. Potassium chloride is not hygroscopic and usually does not agglomerate and has good physical properties. Easy to apply.

Potassium sulphate: "Contains 50%-54% potassium oxide. Pure potassium sulphate is white or light yellow. Diamond or hexagonal crystal, hygroscopicity is far smaller than potassium chloride, physical properties are good, it is not easy to agglomerate, and it is cheap to apply.

The role of potash

Its main effects on the quality of crop products are: 1 to promote better use of nitrogen in crops, increase protein content, and promote the production of sugar and starch; 2 to increase nucleolus, seeds, fruits and tubers, tuberous roots, shape 3) Improve the oil content of oil crops and increase the content of vitamin C in fruits; 4) Accelerate the maturation of fruits, vegetables, and other crops to make the maturity period consistent; 5) Improve the ability of products to resist bruising and natural rot; extend Storage and transportation period; 6 Increase the strength, length and fineness of cotton and hemp crop fiber, purity of color.

The application of potash fertilizer can promote photosynthesis of crops, promote crop results and improve the cold resistance and disease resistance of crops, thereby increasing agricultural yield. Potassium is present in the plant as a free potassium ion, which promotes the metabolism of carbohydrates and nitrogen; controls and regulates the activity of various mineral nutrient elements; activates various enzyme activities; controls nutrient and water transport; Internal pressure prevents the plants from wilting.

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