About nitrogen fertilizer
Rice should use ammonium nitrogen fertilizer, ammonium chloride, urea better.
Corn, wheat and other cereal crops are equally effective with ammonium nitrogen fertilizers (such as ammonium bicarbonate, ammonium sulfate, ammonium chloride, urea) or nitrate nitrogen fertilizers (such as ammonium nitrate).
Potato and sweet potato are also suitable for ammonium nitrogen fertilizer.
In acidic soils, chemical alkaline or physiological alkaline nitrogen fertilizers should be used.
In the saline-alkaline soil area, it is not suitable to purchase and use ammonium chloride containing more chloride ions. In alkaline soils, ammonium nitrate fertilizers are absorbed and utilized by crops, but they must be protected against decomposition and volatilization.
About phosphate fertilizer
Legume crops (soybeans, peanuts), sugar crops (beet, sugar cane), fiber crops (cotton), potato crops (potatoes, sweet potatoes) and melons, fruit trees are more in demand, and there is a better supply of phosphate fertilizers. Fertilizer effect. For plots with large amounts of P fertilizers, it is not necessary to apply them every year to avoid wastage.
About Potash
Potatoes, sweet potatoes, sugar beets, watermelons, fruit trees, etc. require large amounts of potassium, but these potassium-loving crops are not chlorine, potassium chloride should not be applied. Potassium chloride is also not suitable for long-term application on saline-alkali land. Base fertilizers and topdressing can be used on non-chlorinated crops, but it is not suitable for seed fertilizers. Potassium sulfate is suitable for all kinds of soil and crops and can be used as base fertilizer, seed fertilizer, topdressing fertilizer and top dressing fertilizer.
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