黑绒金龟子是一种以成虫为害果树嫩芽、新叶、花朵的害虫,以沙壤土果园发生严重,其中又以幼旺树刚萌芽时为害剧烈。古浪县供销园林场一分场在一九九一年80％以上的幼树程度不同的受到金龟子的危害。危害严重的幼树花芽、叶芽全被啃光,造成幼树萌芽延迟,刚刚结果的小树产量全无,小叶 Black velvet beetle is a kind of insects harmful to the young buds, new leaves, flowers pests, to sandy loam orchard serious occurrence, which once again when young Mongolian tree sprout severe damage. Gulang County Supply and Marketing Park, a sub-field in 1991, more than 80% of the saplings by different levels of chameleon harm. Harmful saplings flower buds, leaf buds are all gnawing light, resulting in young seedlings germination delay, the results of the tree no new production, leaflets