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湖南永州市读者李玉龙问:果树上发现一种红色的钻心虫。它先吃皮层,后钻蛀树干,导致果树干枯死亡,如何防治?
Li Yulong, a reader in Yongzhou, Hunan Province, Q: A red worm is found on fruit trees. It first eat the cortex, after drilling the trunk, leading to dead fruit trees, how to prevent?