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七十年代初,山东省广大棉区就开始“大摆杨柳阵”诱集棉铃虫成虫.同时,杨树枝把被列为棉铃虫的测报工具之一.在粮食、花生产区延续至今.根据多年观察记载,其诱集效果太差.莱西县地处胶东半岛中部,以生产小麦、夏玉米、花生为主.自1973年推广小畦大背麦套玉米以来,棉铃虫已成为常发性害虫,为害逐年加重.一年发生4代,以二、三代为害花生、小畦大背麦套玉米极为严重,影响产量很大.夏玉米可减产7～
At the beginning of the seventies, the vast cotton area in Shandong Province began to trap adults of Helicoverpa armigera in large areas, and at the same time, Populus tomentosa was classified as one of the reporting tools for bollworm in the food and flower production area According to many years of observation, its trapping effect is too poor.Lacey County is located in the central part of the Jiaodong Peninsula, the production of wheat, summer corn, peanut-based Since the promotion of small captive Maize Maize in 1973, the cotton bollworm has become Often pests, pests increase year by year.Generation occurs four times a year, with two or three generations of pests damage, small maize large backcountry of corn is extremely serious, affecting the yield of summer maize can be reduced by 7 ~