What are the wrong ways to fertilize?

What are the wrong fertilization methods in daily life? What's the reason? Also ask experienced netizens to help introduce that in the process of agricultural planting, fertilizing crops is the first way to increase crop production and income, but some wrong fertilization methods will greatly reduce fertilizer efficiency. therefore, the farming network has sorted out some common wrong fertilization methods, which are listed below for netizens' reference. Mistake one, drying farm manure: common human manure and chicken manure have become the main base fertilizer for vegetable production in greenhouse, but vegetable farmers often dry human manure and chicken manure in the field for convenience. This practice will cause maggots to reproduce, nitrogen volatilization and loss of nitrogen nutrients in fertilizers. Error 2. Using calcium, magnesium and phosphorus as base fertilizer in alkaline soil: calcium, magnesium and phosphorus is a weakly acidic fertilizer, insoluble in water, and can only be gradually transformed into water-soluble phosphate absorbed by crop roots under weak acid conditions, but applied in alkaline soil. It can not solve the urgent need of crop seedlings for phosphorus, resulting in physiological phosphorus deficiency. Error 3. Superphosphate is used for topdressing on the surface: because phosphorus is less mobile in the soil, the moving range is between 1-3 cm. Therefore, topical application is difficult to transfer to the crop rhizosphere, so it can not supplement the phosphorus in the crop. Error 4. Watering immediately after the application of urea: because urea is an amide nitrogen fertilizer, it is soluble in water, and the soil can be transformed into ammonium bicarbonate after decomposition, which can be absorbed and utilized by crops. watering immediately after surface application will easily lead to urea loss with water and reduce fertilizer efficiency. Error 5. Ammonium bicarbonate is sprinkled with water: this method often results in many fertilizers at the inlet, crop growth is different, and it is difficult to manage, while the greenhouse temperature rises in the afternoon, ammonia escapes from the soil, fumigating the lower leaves of crops, causing fertilizer damage. What kind of fertilizer can't be used as a kind of fertilizer? what should you pay attention to when applying fertilizer?