Increasing production effect: Rational application of potassium fertilizer can improve crop quality, coordinate nutrient supply, and significantly increase crop yield. According to the chemical fertilizer test and balanced fertilization research data, every kilogram of pure nutrient potassium fertilizer can increase the yield of wheat 3-5 kg, corn 4-6 kg, potato, melon, fruit, vegetables and other potassium or potassium-demanding crops, potassium application The effect is more obvious.
Technical points: Potassium sulphate is suitable for crops in various soils. It can be used as base fertilizer, seed fertilizer, top dressing or top dressing, and can be applied as a base, acupoint application or spray. Generally, it is more reasonable to apply base fertilizer before sowing. High-yield wheat and corn are applied for about 5-15 kg of potassium fertilizer per mu. It is advisable to apply 10-20 kg per acre of potato and sweet potato.
Potassium chloride is suitable for general soil, but it cannot be applied in saline to avoid increasing salt. The application technique is the same as that of potassium sulfate. Generally, the base fertilizer is mainly applied, and the dosage of 5-15 kg per mu is more suitable.
The combination of potassium fertilizer and nitrogen and phosphate fertilizer should pay attention to the following two points: First, the mixture of nitrogen and potassium. Mixing ammonium carbonate with potassium sulfate and potassium chloride must be used with mixing, urea can not be mixed with potassium chloride; second, phosphorus and potassium are mixed. Commonly used phosphate fertilizers and potassium fertilizers can be mixed and applied.
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