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Reason for excessive fruit with permanent calyx in pear‘Duangshansuli’
Author(s): 
Pages: 41-42
Year: Issue:  2
Journal: DECIDUOUS FRUITS

Keyword:  砀山酥梨不脱萼果;
Abstract: 砀山酥梨的不脱萼果成熟晚,萼洼四周易生果锈.通过调查看出,萼片脱落与否和树龄、树势、修剪程度及光照条件等关系密切.1~5年生的幼树脱萼果率近90%,随树龄增加,不脱萼果的比例增加.成年弱树及果台枝很短和无果台枝的果实不脱萼果占90%~97%;4m×4m的密植园48年生树不脱萼果占86%~98%;8m×8m的稀植园不脱萼果一般在38%以上.修剪过重或过轻会使不脱萼果增加.
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