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根据实践经验,苹果坐果率达到35％左右即可获得较好的产量。林芝县果园占比例较大的是红玉、祝光等品种。据一九七四年调查,坐果率均在15—17％左右,可见,坐果率与增产的要求相比是偏低的。因此,如何提高坐果率是继续增产的关键。为了提高坐果率,林芝果园除改进修剪技术,增强光线,加强花前肥水管理,并抓前期病虫害防治以外,一九七六年重点对一些品种实行了叶面喷硼,收到了坐果高和加快果个膨大的效果。
According to practical experience, apple fruit set rate of about 35% can get better output. Nyingchi County, orchards accounted for a larger proportion of ruby, Zhuangguang and other varieties. According to the survey conducted in 1974, the fruit setting rates are all around 15-17%. As can be seen, the fruit setting rate is relatively low compared with the requirement of increasing production. Therefore, how to improve fruit setting rate is the key to continue to increase production. In order to improve the fruit setting rate, in addition to improving pruning techniques, enhancing light, strengthening pre-treatment fertilizer management and preemptive pest and disease control, Linzhi Orchards implemented foliar boron spraying on some varieties in 1976 and received high fruit-bearing and speeding Fruit a dilated effect.