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2, fertilizer should be deep application, early application. Deep application can reduce nitrogen volatilization, prolong the time of fertilizer supply, and increase the utilization rate of nitrogen fertilizer. Early application is beneficial to early plant growth, prolonging fertilizer efficiency and reducing nitrate accumulation.
3. Apply biological nitrogen fertilizer and increase phosphorus and potassium fertilizer. Fertilizers allowed in the production of pollution-free vegetables include farmyard manure, biological fungi, inorganic mineral fertilizers, trace element fertilizers and other such as bone meal, amino acid residues, livestock processing waste, etc., but the use of nitrate nitrogen fertilizer is prohibited, and chemical fertilizers must be combined with organic fertilizers. Apply. The application of biological nitrogen fertilizer is one of the effective ways to solve the limitation of chemical fertilizer. Phosphorus and potassium fertilizers have a significant effect on increasing the resistance of vegetables.
Huaxian County Fertilizer Station Zhao Dongli
1. Manure and manure should be fully fermented and decomposed, and rinsed with water after topdressing.
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