套袋对翠玉梨果锈发生的影响

Impacts of Occurence of Stains on Different Treaments of Cover Bags of Jaderit Pear

以安徽省北部砀山果区改接的翠玉梨为对象，研究不同种类果袋以及不同套袋时期对果面锈斑形成及相关性状的影响，结果表明，套塑膜袋十双层袋锈斑指数最低，效果最好；套袋时期以5月上旬（花后20，30d）为宜；套其他种类果袋或在其他时期套袋都会不同程度加重果面锈斑的形成。

Took the Jaderit Pear in Dangshan fruit area in north of Anhui Province as objects, this experiment maily studied influence of different kinds of bags and bagging time on fruit suefaee stains formation and the cnn＇elation e ＇haracters. The result showed that the best bagging effect was using bagging of membrance ＋ double-decked paper bag, the most suitable time of bagging was the beginning of May （20 - 30 d alter tlower）. Bagging other kinds of fruit bags or bagging at orther time, the）, could all aggravate degree of fruit surface stains formation.