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柑桔高接换种,是对实生树改造、老树更新,实现良种区域化,防止和克服大小年结果的有效途径。1968—1973年,我县有九个公社、110个大队对未结果的实生甜橙树换种41万株,通过加强培育管理,两三年后即进入结果。1977年春季遭受严重冻害后,又将冻害较重的老品种换种5万多株。
Citrus high exchange seed, is a real tree transformation, regeneration of old trees to achieve regionalization of varieties, to prevent and overcome the size of the annual results an effective way. From 1968 to 1973, there were nine communes in our county, and 110 brigade changed the number of fresh orange trees with fruitlessness by 410,000. After two years and three years, they will enter the result. After the severe freeze-thaw in the spring of 1977, more than 50,000 strains of old varieties with heavier frost damage were changed.