香梨优斑螟的危害及防治香梨优斑螟（ＥｕｚｏｐｈｅｒａＰｙｒｉｅｌｌａ）目前在新疆香梨产区严重发生。无论树势强弱都易为害，部分产区被害率高达５０％。有的造成树体迅速死亡，而后转移到其它树上为害，必须引起足够重视。该虫主要为害梨枝干的韧皮部，受害枝皮外面... Harm of Pear and Its Prevention and Control Eurasian Phererla (Euzophera Pyriella) present in Xinjiang pear serious occurrence. No matter the strength of the trees are vulnerable, some areas hit rate of up to 50%. Some cause rapid death of the tree, and then transferred to other trees harmful, we must pay enough attention. The main pest damage pest branches of the phloem, the victim branch outside the skin ...