现已获得16个苹果品种和6个梨品种的无病毒母本树。
Virus-free mother trees of16apple varieties and6pear varieties had been obtained in the study.
以开心形丰水梨幼树为试材，通过轻剪、重剪和不修剪处理对其树体生长指标、产量、根系分布度进行比较分析。
The young trees of open-center shaped Housui pear were used as the material to study the effect of different pruning rate(light, heavy and no) on the pear tree growth, fruiting and root growth.
试验研究了无授粉树的老苹果梨园利用角额壁蜂辅助授粉对苹果梨生长的影响及经济效益分析。
The technology of pollinating on apple-pear with Osmia in the old orchard without pollinating trees was studied.
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