我省柑桔老产区在解放前定值的一部分甜橙树,现已五十年生左右,正处于盛果末期和进入衰老时期,单位面积产量不高,针对这种情况,我们从1978年开始,开展了甜橙老树丰产栽培试验研究,采用经济有效的技术,提高产量,延长经济结果期限,经过四年的试验,已取得一定成效,现简要总结 Our province citrus old producing area before liberation part of the set value of orange tree, now about 50 years old, is in the end of fruit and into the aging period, the yield per unit area is not high, in view of this situation, we from 1978 At the beginning, we carried out the experimental research on high-yielding cultivation of old sweet orange tree, adopting the economic and effective technology, increasing the output and prolonging the economic result period. After four years of trial, some achievements have been achieved.