Which fertilizers should not be flushed?
Flushing fertilization is widely used in greenhouse and open field vegetables, mainly in the peak period of vegetable growth. But not all fertilizers can be used for flushing, only water-soluble fertilizers can be flushed with water. Nitrogen fertilizers are commonly used in urea, ammonia, ammonium sulfate and ammonium nitrate; potassium chloride and potassium sulfate are commonly used in potash fertilizer, and potassium nitrate can also be used in potassium fertilizer. Phosphate fertilizer, granular compound fertilizer, solid organic fertilizer and microbial fertilizer can not be applied.
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Rational application of water-soluble fertilizer
Plants need to absorb all kinds of nutrients in order to grow and develop. However, it is the nutrient factor with the smallest relative content in the soil that determines the crop yield, and the yield changes relatively with the increase or decrease of this factor to a certain extent. It is usually explained by water buckets. The barrel represents different nutrient contents and factors.
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Watch out for fertilizer packaging and beware of the trap of bullying farmers
Organic fertilizer drying and preparation: drying human and animal manure will cause maggots to reproduce and lose nitrogen nutrients of fertilizer. The correct way is to compost organic manure into base fertilizer, such as 4000 kg of human manure or chicken manure, 100kg of calcium magnesium phosphate fertilizer and 400kg of crushed wheat straw in the sunny place in late July.
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