A: The initial results of apple tree fertilization should be heavy phosphorus with nitrogen and potassium. The purpose of fertilization at this stage is to promote the flower bud differentiation of fruit trees, to strengthen flower buds, to strengthen the crown, to promote fruit and fruit; for the fruiting period, the fertilization of fruit trees requires NPK, potassium. The demand is large. The purpose of fertilization at this stage is to rationally fertilize and ensure continuous high yield and stable yield. The initial fruit tree should be added with diammonium 1~2 kg and potassium chloride 0.5~1 kg, and each plant should be added with diammonium 2 during the fruiting period. ~ 3 kg and potassium chloride 1 ~ 2 kg, more compound fertilizer, phosphorus and potassium fertilizer, appropriate amount of nitrogen fertilizer.

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