日前,笔者从香河县林业局获悉,河北省廊坊市香河县林业局根据近来对美国白蛾的调查结果,向廊坊市森防站申领周氏啮小蜂5000万头,并及时投放刘宋、淑阳和安平等9个乡镇美国白蛾发生的重点区域,生物防治美国白蛾等林业有害生物。目前,已防治500余亩。据介绍,周氏啮小蜂是美国白蛾、杨扇舟蛾、榆毒蛾和 Recently, the author learned from Xianghe Forestry Bureau, Xianghe County, Langfang City, Hebei Province Forestry Bureau recently based on the findings of the survey on the United States white moths Langfang City Forest Station to apply for 50 million Zhou’s bees and timely delivery of Liu Song , Shuyang and Anping and other nine towns in the United States occurred in the key area of ​​white moths, biological control of American white moth and other forest pests. At present, 500 acres have been prevented and controlled. According to reports, Zhou’s bee is a small white beetle United States, Yang Fan moths, elm moth and