冬果梨在我省栽培历史悠久,且分布广,面积大,为我省名产。它具有树势强健,抗旱寿长,丰产,质优,耐贮藏等优点。冬果梨在长期栽培中,变异类型较多,良莠不齐,优良品系株率较低,是影响产量和质量提高的因素之一。因此调查选择冬果梨的优良品系,是梨品种工作中一项重要内容。我省自50年代以来,先后提出过不少冬果梨的优良 Winter fruit pear cultivation in our province has a long history, and is widely distributed, large area, is our province famous. It has a strong tree vigor, drought and long life, high yield, high quality, resistant to storage and so on. In the long-term cultivation of winter pear fruit, there are many types of variation, good and bad, low strain rate of fine lines is one of the factors that affect the yield and quality. Therefore, the investigation and selection of winter pear excellent lines, pear variety is an important part of the work. Since the 1950s, our province has put forward many excellent pear fruits