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试验设于山东省掖县的小黄泥沟、蓬莱县的窖上和招远地区的东南村3个苹果园内,树龄一般30年左右,历年苹果绵蚜危害较重。施用氧化乐果的方法足:距主干50cm范围内,扒开表土,使几条大根外露,每条根上用400/氧化乐果乳剂10倍液各涂抹10cm左右长度,以药液稍下流为度,干后再涂抹一次,然后用塑料薄膜盖住抹药处,覆土。设防治
The experiment was conducted in the small yellow muddy mud in Ye County, Shandong Province, the cellar in Penglai County and the three apple orchards in the southeast village of Zhaoyuan region. The age of the test was about 30 years and the apple aphid was severely harmed over the years. Apply omethoate enough: away from the main 50cm range, the claw open the topsoil, so that several large roots exposed, each root with 400 / omethoate 10 times the liquid smear 10cm or so length of the liquid to slightly downstream for the degree , Dry once again smear, and then covered with plastic film plaster Department, soil cover. Set prevention and control