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近年由于气候的异常变化及相应的管理技术不到位 ,套袋苹果的病虫害有上升的趋势。尤其黑点病的发生比较突出 ,虽然没有造成果实腐烂 ,但影响其外观品质。为防止这种病害的继续发生与蔓延 ,结合生产实践 ,仅就发生与防治方法总结介绍如下。1 黑点病发生的原因1 1 露水不干套
In recent years due to abnormal weather changes and the corresponding management techniques are not in place, bagged apple pests and diseases are on the rise. In particular, the occurrence of black spot disease more prominent, although did not cause fruit decay, but the appearance of its quality. In order to prevent the occurrence of this disease and spread, combined with production practices, only the occurrence and prevention methods are summarized below. 1 black spot disease causes a dew do not dry sets