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砂梨（Ｐ．ｐｙｒｉｆｏｌｉａＮａｋａｉ）是湖北梨树栽培的主要种类［１］。为了充分利用山地栽植砂梨，发展高产优质高效果树生产，我们于１９９７～１９９８年对利川市二高山区和江汉平原的砂梨进行了实地调查，探讨了海拔高度对砂梨生育状况的影响。现将调查结果报告如下
Pear (P. pyrifolia Nakai) Hubei pear cultivation is the main species [1]. In order to make full use of the planting of sand pear in mountain area and to develop the production of high yield, high quality and efficient fruit trees, we conducted a field survey of sand pear in Ergoshan and Jianghan Plain of Icheon from 1997 to 1998, and discussed the effect of altitude on the reproductive status of sand pear. The survey results are reported below