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有的梨树年年花开满树而不结果,主要是因为品种单一或品种间花期悬殊,不能相互授粉。大多数梨树品种属异花授粉。因此,建园时要注意授粉品种树的配置。采用高接授粉树可以矫正。不同品种之间,只要花期相同,都可作授粉树。如苍溪雪梨是白花高度不孕的品种,因此,定植时必须配置15—20％的优质授粉品种,才能高产和优质。苍溪雪梨的授粉品种以河北鸭梨、
Some pears tree full year without blooming flowers, mainly because of a single species or varieties of flowers between the great disparity, can not pollinate each other. Most pear varieties are cross-pollination. Therefore, the construction of the park should pay attention to the configuration of the tree species of pollination. The use of high-grafted pollen tree can be corrected. Between different varieties, as long as the same flowering, pollination trees can be used. Such as Cangxi Sydney pear is a high degree of infertility varieties, therefore, must be configured when planting 15-20% of high-quality pollination, in order to high yield and quality. Cangxi Sydney pollination varieties to Hebei pear,