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广西国营新光农场和广西农垦柑桔研究所试验的压顶更新改造柑桔衰老树的修剪技术,取得显著经济效果。目前已在广西农垦系统国营农场和钦州地区社队果园普遍应用推广。新光农场1957年以来开始种植的20多万株柑桔,前期生长很好。到了七十年代,由于树冠交叉重叠,荫蔽封行,影响通风透光,树的中下部未老
Guangxi State-owned Xinguang Farm and Guangxi NongKong Citrus Research Institute have experimented with pruning techniques for pruning and regeneration of citrus-aged trees and achieved remarkable economic results. At present, it has been popularized and popularized in Guangxi State Farms System State Farm and Qinzhou Community Corps orchards. More than 200,000 citrus trees planted in Xinguang Farm since 1957 have been growing well in the early stage. In the seventies, due to overlapping canopy crowns, blocking the envelope, affecting the ventilation, the middle and lower part of the tree is not old