为了探索克服柑桔大小年结果的栽培管理措施,达到高产稳产,平衡增产的目的,笔者仿照桃树留预备枝更新修剪法(以下简称更新法),于1980—1982年三年分别在南丰蜜桔与温州蜜柑上进行了结果枝留预备枝更新修剪法试验,以验证更新法应用于柑桔上的增产效果实用价值。一、方法 供试柑桔品种为七年生南丰蜜柑与尾张温州蜜柑,立地条件为红壤,水源较方便。施肥水平中等,平均株产40—50斤。试验选择同株上相邻的长短、强弱一致的结果枝数枝及挂果情况基本相同的结果枝组,分别采取更新法修剪、常规修剪与不修剪(Ck)三种处理。其中更新法处理重复一次。更新法修剪的具体做法是:第一年冬季采果时,将结果枝留二、三叶短截.第二年被短截的 In order to explore the cultivation and management measures to overcome the annual results of citrus size and reach the goal of high and stable yield and balanced production, the author modeled on the peach tree reserve pruning update pruning method (hereinafter referred to as the renewal method), in 1980-82 three years respectively in Nanfeng Tangerine and mandarin orange on the results of the branch to stay in the pruning branch pruning test to verify the updated method applied to citrus yield increase on the practical value. First, the method for the test citrus varieties of seven-year-old Nanfeng Satsuma and the end of the Wenzhou Satsuma, site conditions for the red soil, water more convenient. Medium fertilization, the average yield of 40-50 kg. The experiment selected the same length of the same strain on the same strength and strength of the results of branches and fruiting fruiting branches of the same results, respectively, to update the law pruning, pruning and pruning (Ck) three treatments. Update process which is repeated. The specific method of pruning update law is: the first year of winter pomes, the results of the branches left two trilobes short cut the second year was stub