Results The purpose of fertilizing the fruit trees in the initial stage is to promote flower bud differentiation, strengthen flower buds, strengthen the crown, and preserve fruits. At this stage, fertilization should apply heavy phosphorus fertilizer with N and K fertilizers; the purpose of fertilization of fruit trees in the fruit period is to ensure continuous and high yields through rational fertilization. In this stage, fertilization should be done with N, P, K supplementation, in which the demand for potassium is greater; during the aging period, the fertilization purpose of the fruit tree is to rejuvenate and prolong the fruiting period. Therefore, in this period, the fruit grower should mainly use nitrogen fertilizer, combined with phosphorus and potassium fertilizers.
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