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经调查，供试３４个果园的施肥量和产量变异很大。许多果园施氮肥过多，钾肥太少。经叶分析，Ｎ，Ｐ，Ｋ，Ｆｅ，Ｚｎ的平均含量依次是２２．８±２．５ｇ·ｋｇ－１，１．４±０．２ｇ·ｋｇ－１，１０．７±２．０ｇ·ｋｇ－１，２２５±５１ｍｇ·ｋｇ－１和１８．７４±１２．３６ｍｇ·ｋｇ－１．Ｋ和Ｚｎ的含量低于正常值的果园数分别占３５．３％和５８．９％．多数果园Ｎ，Ｐ，Ｋ营养不平衡，营养三要素的需要顺序多是Ｋ＞Ｐ＞Ｎ．根据目标产量、生产单位果品需要养分量和养分平衡指数，确定了各果园的最小养分因素及其需肥量，并按养分比例法推荐了其他肥料的施用量。
After investigation, the test 34 orchards fertilization and yield variation is great. Many orchards too much nitrogen fertilizer, potassium too little. According to leaf analysis, the average contents of N, P, K, Fe and Zn were 22.8 ± 2.5g · kg-1, 1.4 ± 0.2g · kg-1 and 10 ± 2.0g · kg-1,225 ± 51 mg · kg-1 and 18.74 ± 12.36 mg · kg-1. The number of orchards with K and Zn contents lower than normal accounted for 35.3% and 58.9% respectively. Most orchards N, P, K nutrition imbalance, nutritional needs of the three elements of the order is K> P> N. According to the target yield, the nutrient content and nutrient balance index of the fruit in the production unit, the minimum nutrient factor and the required fertilizer amount of each orchard are determined, and the application rates of other fertilizers are recommended according to the nutrient proportion method.