黑绒金龟子以成虫为害苹果、梨、葡萄、桃等果树叶片。我县南辛庄大队果树苗圃,1979年4、5月间严重发生,30％树苗成了光杆。成年果园也有不同程度的发生。根据黑绒金龟子喜食杨树叶的特点,南辛庄大队用杨树叶拌六六六粉进行防治,取得良好效果。具体方法是:先把杨树叶放在冷水缸 Black velvet beetles to adult damage apple, pear, grape, peach and other fruit leaves. Nanxinzhuang Brigade in our county fruit tree nurseries, serious cases occurred in April and May 1979, 30% of saplings became polished poles. Adult orchards have varying degrees of occurrence. According to the characteristics of black velvet beetle eating poplar leaves, Nan Xinzhuang brigade with poplar leaves six hundred sixty-six powder for prevention and treatment, achieved good results. The specific method is: first poplar leaves on the cold water tank