There are differences in fertilization of fruit trees at the beginning, full fruit, and senescence

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 purpose of fertilization of fruit trees is to rejuvenate and prolong the fruiting period. Therefore, fertilizers should be dominated by nitrogenous fertilizers and should be supplemented with phosphorus and potassium fertilizers during this period.