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早桔又名黄岩蜜桔,是黄岩柑桔的传统主栽品种之一,种植面积占黄岩县柑桔总面积的12.9％,产量占全县柑桔总产量的30％左右。因种植历史久,树龄大,50年生以上的老树占58％。这些树由于树冠高大,枝叶交叉重叠,造成树冠下部与内膛空虚,树势衰退,绿叶层薄,有效结果体积小,产量低。 我们从1979年开始对衰老早桔进行轮换更新修剪试验,逐年回缩树冠顶部衰老枝序,达到了恢复
Early Orange, also known as Huangyan tangerine, is one of the main varieties of Huangyan citrus cultivated area accounts for 12.9% of the total area of citrus in Huangyan County, the output accounts for about 30% of the county’s total citrus output. Due to a long history of planting, tree age, more than 50 years old trees accounted for 58%. Due to the tall canopy of the tree, the branches and leaves overlap and overlap, causing the lower part of the canopy and the inner cavity empty, the decline of the tree vigor and the thin layer of the green leaf. The effective result is small in volume and low in yield. We started from 1979 on the early orange rotation replacement pruning test, annual canopy retraction of the top of the aging branches, reaching a recovery