柑桔是我县经济拳头产品之一,由于七十年代前种植品种单一,80％以上都是中熟品系尾张。这些植株随树龄增长逐年老化,树冠内膛枝条逐渐干枯空虚,尤其是老龄植株和外围枝条郁闭的植株空膛现象日趋严重,产量逐年下降。从一九八三年起,我们以尾张等中熟品系为试材,在内膛采用芽接 Citrus is one of the leading economic products in our county. As a result of the single cultivation of varieties before the seventies, more than 80% of them are medium-ripened ones. These plants grew year by year with age, crown branches bore gradually withered, especially the aging plants and the peripheral branches of the canopy of plants closed increasingly serious phenomenon, the output declined year by year. From 1983 onwards, we use Mizuno Matsui as the test material, using the sprouting in the bore