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桑天牛是桑树、果树、林木的一大害虫,在全国分布普遍,已知为害树种达36种之多。桑天牛的成虫啮食桑皮,幼虫蛀树干,使树体受害惨重。防治桑天牛,过去一直是把精力放在对付幼虫上。然而,幼虫隐藏在树体木质部内,自上而下钻蛀,虫道长达3～5米,个别可长8米,不仅树体受害,防治也有一定难度。以往采用的防治方法,多为人工穿
Morus alba is a large pests of mulberry, fruit trees, trees, distributed widely in the country, known as 36 kinds of tree species. Morus alba adult grub mulberry, larvae bored tree trunks, the tree victims. Control Morus alba, the past has been to focus on larvae. However, the larvae are hidden in the xylem of the tree and are drilled from top to bottom. The worm lanes are 3 to 5 meters in length and 8 meters in length. They are not only harmed by trees but also have some difficulty in prevention and treatment. The prevention and treatment methods used in the past, mostly artificial wear