板栗(Castanea mollisima Bl.)是坚果类中经济价值较高,又可供出口的果品,目前供应还难于满足人民需要。板栗病虫害较多,其中之一是栗瘿蜂,或称栗瘤蜂(Dryocosmus kuriphilus Yasur.)。此虫在我国南、北各省都有分布,在日本为害更甚。此虫防治技术较难,生产上未完全解决。在春季常见此虫在栗枝上作虫瘿,瘿色由绿变红,发生严重时各枝上普遍分布,栗树生长衰弱,甚至完全不结果。 Chestnut (Castanea mollisima Bl.) Is a nutty fruit of high economic value, but also for export, the current supply is also difficult to meet the needs of the people. Chestnut pests and diseases, one of which is the chestnut bee, or called chestnut bees (Dryocosmus kuriphilus Yasur.). This insect in our country south, northern provinces have distribution, more harmful in Japan. This pest control technology more difficult, the production is not completely resolved. Common in the spring of this insect in the chestnut branch insects, 瘿 color from green to red, in case of serious distribution on each branch, chestnut tree growth is weak, or even no result.