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栗蜂又称栗瘤蜂，是板栗生产上的主要害虫，曾于 70年代末 80年代初在北京地区暴发。其危害症状为：春季受害芽形成瘤状、圆形或椭圆形、坚硬的虫瘿，不能抽生新枝结果。严重者枝条枯死，造成减产或绝产。 近几年来，平谷县板栗面积不断扩大，板栗生产已经成为山区经济开发
Chestnut also known as chestnut bee, chestnut production is the main pest, once in the late 70s early 80s in Beijing area outbreak. The harm symptoms are: the buds of spring damage formed tumor, round or oval, hard insects, can not pump new branches results. Dead branches in serious cases, resulting in reduced production or abortion. In recent years, Pinggu chestnut area continues to expand, chestnut production has become a mountain economic development