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一、果树的营养特点1、多年生长,各时期对养分的要求不同果树生长期大致可以分为:幼龄期、初果期、盛果期、更新期和衰老期。幼龄期(开花结果之前):该期需肥量较少,但对肥料非常敏感。要多施有机肥;化肥要施足磷肥;适当配施钾肥;控制施用氮肥。初果期(开花结果一形成经济产量之前):是营养生长到生殖生长转化的时期。若营养生长长势较强,以磷肥为主,配施钾肥,少施氮肥;若营养生长较弱,以磷肥为主,适当增加氮肥的施用,配施钾肥。
First, the nutritional characteristics of fruit trees 1, the growth of many years, the nutrient requirements of different periods can be divided into the growing period of fruit trees can be divided into: young age, early fruit, fruit, renewal and aging. Juvenile (before flowering): Less fertilizer is needed during this period, but very sensitive to fertilizer. To more organic fertilizer; fertilizers to be sufficient enough phosphate; appropriate potassium fertilizer; control of nitrogen fertilizer. First stage (before flowering results in economic yield): It is the period from vegetative to reproductive growth. If the growth of vegetative growth is strong, the main phosphate, with the application of potassium, less nitrogen fertilizer; if the vegetative growth is weak, the main phosphate, an appropriate increase in the application of nitrogen fertilizers, with potash.