在温室大棚设施栽培条件下开展杂交、自交、自由授粉，野外昆虫辅助授粉。
Cross, self and opening pollination were conducted in the green house, the subsidiary pollination by insects was carried out outdoors.
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.
应用推荐