目前各国普遍采用叶分析确定果树营养状况的做法主要缺陷是:(1)诊断结果出来后,矫正施肥只能在夏季或秋季进行,这对于某些元素来说可能为时已晚,对当年产量和品质提高作用不大。如果在1月份采集休眠期枝条进行营养分析,那么,就可及早掌握树体营养信息,果农在生长季早期即可有的 At present, leaf decanalysis is widely used in various countries to determine the nutritional status of fruit trees. The main defects are: (1) after the diagnosis results, the corrective fertilization can only be carried out in summer or autumn, which may be too late for some elements, And improve the quality of little effect. If you collect the dormant branches in January for nutrition analysis, then you can early grasp of tree nutrition information, fruit growers in the early part of the growing season