In recent years, the shortage of potassium in farmland has become increasingly serious. The effect of increasing potash fertilizer on the high yield and quality of crops has been increasingly recognized by people. However, some peasant households can't tell which kind of potash is good to buy. This requires us to know the same and different points of knowing potassium chloride and potassium sulphate.

The same points of the two potash fertilizers can be dissolved in water and the crop can be directly absorbed and utilized. At the same time, they are all physiological and acidic fertilizers that are applied on acidic soils and should be combined with alkaline fertilizers (calcium magnesium phosphate, ammonium bicarbonate, and arbor), but not mixed to prevent soil acidification. In addition, they are all inorganic fertilizers. After application, the separated potassium ions can be absorbed by the organic matter of the soil. However, in the absence of organic matter, potassium ions are liable to be lost with water. Therefore, it should be applied in conjunction with organic fertilizers, and the appropriate amount of lime should be used. Avoid affecting the structure and properties of the soil.

The difference between the two potassium fertilizers is potassium chloride: it is made from potash salt or carnallite, and it is extracted from sea salt or well salt by-products. The appearance of white or light yellow crystals, sometimes containing red iron salts. Soluble in water, it is a kind of high concentration of available potassium fertilizer. It has hygroscopicity and it is easy to damp and agglomerate. To prevent moisture absorption, potassium chloride produced in Canada is often added with about 0.5% of a red organic compound that is harmless to soil and crops and can be decomposed by soil microorganisms, and therefore is red (pears are used to refer to red potash fertilizer). Potassium chloride is high in potassium oxide, generally reaching 50% to 60%, soluble in water, and has quick effect after application. Potassium sulphate: It is made of potassium-containing sulfate ore or alum. It is white or off-white crystal. It is easily soluble in water, has low hygroscopicity, is not easy to agglomerate, and is easy to apply. It is a very good water-soluble potash. Since potassium sulfate does not contain chloride ions, it has a wide range of application and is applicable to various crops that avoid chlorine. The effect of increasing production is significant, and the quality of the product can also be improved.

Differences in application 1. Application of crops is different. Potassium chloride contains chloride ions, which can increase yield and fiber quality in ramie and cotton fields. However, chlorine-sensitive crops that are particularly sensitive to chlorine, such as tea, tobacco, and ginger, have reduced aromas and also contribute to the flammability of tobacco. Deterioration; Chloride ions on sugar crops such as beets, potatoes, sweet potatoes, grapes, etc. will reduce the yield and quality. If these crops do not use potassium chloride, it is best to use base fertilizers when composting with organic fertilizers, or to apply them as early as possible. The potassium sulfate component does not contain chlorine, and its application scope is wider than that of potassium chloride. It is used in tobacco, sweet potato, sugar cane and all the chlorine-free crops and cruciferous sulfur-loving crops, and the effect is better than that of potassium chloride. 2. The application of soil is different. For paddy fields with poor drainage, strong reduction, and the application of large amounts of organic fertilizer without compost, potassium sulphate should not be used to prevent sulfides from being reduced to hydrogen sulfide and poisoning crop roots. Therefore, this type of paddy field is suitable for the application of potassium chloride. Potassium chloride is applied to rice fields. Chloride ions are eluted to the lower layer of the soil to avoid adverse effects on crops. Chloride ions have a special inhibitory effect on the nitrosomycetes in soil, which can reduce the loss of nitrogenous nitrogenous nitrogen fertilizer due to nitrification and denitrification. Potassium chloride is much more effective than potassium sulfate in reducing rice fields. For sulfur-depleted soils, such as flooding paddy fields and cold-sweeping fields where soaking water is ploughed, potassium sulfate is preferred. 3. The application method is different. Potassium sulfate is used as base fertilizer and top dressing, and it can also be used as seed fertilizer and top dressing. Basal fertilizer dosage is generally 10~12.5 kg per acre, seed fertilizer is generally 1.5~2.5 kg per acre, foliar spray fertilizer concentration is 0.5%~2%, and potassium chloride can be used as base fertilizer and top dressing. Fertilizers and top-dressing are used because chlorine ions have a burning effect on seed germination and young stems and leaves. Basal fertilizer is generally used in an amount of 8 to 10 kilograms per mu, and the amount of top dressing is usually 5 to 7.5 kilograms. Http://

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