武义县桐琴果园,有温州密柑200余亩,树龄一般是4～7年。1971年夏、秋遇到长期的干旱,柑桔夏梢发黄。这年冬天和1972年初,又遭到严重冻害,绝大部分桔树当年生枝条枯死,少数2～3年生枝条冻伤,桔叶卷缩黄枯。该果园的广大职工,为了探索温州密柑在受到严重冻害后开花结果的规律,争取生产较多的桔子,除加强管理,增施肥料外,还积极开展科学实 Tongyi Wuyi County orchard, Wenzhou Citrus 200 acres, the age is generally 4 to 7 years. In the summer of 1971, autumn encountered long-term droughts, orange summer tip yellowing. This winter and early 1972, suffered severe frost damage, the vast majority of orange trees were dead branches, a few 2 to 3-year-old branches frostbite, orange curls yellow. The majority of workers in the orchard, in order to explore the Wenzhou citrus fruit after the severe frost damage the flowering of the law, strive for the production of more oranges, in addition to strengthening management, increasing fertilizer, but also actively carry out science