Poor quality of crops deteriorates

Potassium fertilizer is crucial in agricultural production, and potassium deficiency can easily lead to a decline in crop yield and quality deterioration. Some farmers have misunderstandings about potash fertilizer. One is that it is difficult to quickly see the obvious effect of applying potash fertilizer, and it does not matter if it is not applied. The second is that if compound fertilizer and organic fertilizer are used, potassium fertilizer can no longer be used. Third, some people say that potash fertilizer The price is too expensive, it is not worthwhile to invest more.

In order to increase the yield and quality of crops, we must first increase the level of potash application. Potassium fertilizer is an important and irreplaceable important nutrient element in the agricultural production. It can accelerate biochemical reactions in crops, promote the metabolism of carbohydrates and the formation of oil, and can increase the thickness of the cell wall and the sweetness of fruits and vegetables. degree.

Second, to understand the potassium content of various fertilizers. In organic fertilizers, the content of potassium oxide in human excreta is 0.2% to 0.3%, the content of potassium oxide in pig manure is 0.44%, the content of potassium oxide in cattle dung is 0.15%, and the content of potassium oxide in chicken manure is 0.9%. Potassium oxide content in manure was 0.6%. After the crop stalks are air-dried, the general K2O content is about 1%, and the highest is the corn stalks. The content of K2O after air drying is 2.28%. In compound fertilizers, the general content of potassium oxide is 15% to 18%. From the perspective of potassium requirement for field crops, generally, 15-20 kg should be applied per acre. For insect-resistant cotton, it should not be less than 25-30 kg per acre.

Third, we must rationally apply potash fertilizer. There are many types of potash on the market. One is to use potassium chloride or potassium sulfate of guaranteed quality. Do not use poor quality potassium fertilizer; the second is to use less than 15% potassium for crops with low potassium requirements. Compound fertilizer can use high content of potassium sulfate or potassium chloride fertilizer for crops with high potassium demand; third, potassium fertilizer can be mixed with organic fertilizers, and can also be applied singly; deep-fertilizers must be applied; Chlorine crops such as tobacco, watermelon, potatoes, etc., can only use potassium sulfate compound fertilizer.

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