河北省永年县是小麦吸浆虫的老发生区,发生面积和程度有逐年加重的趋势,给粮食安全构成威胁。为筛选防治小麦吸浆虫的高效低毒新农药,永年县于2006年进行了5%毒死蜱颗粒剂防治小麦吸浆虫试验(5%毒死蜱颗粒剂由山东华阳科技股份有限公司提供,下称毒死蜱)。1.材料与方法。试验在 Yongnian County, Hebei Province, is an old occurrence area of ​​the midge of wheat, and its occurrence area and degree have been increasing year by year, posing a threat to food security. In order to screen high-effective and low-toxicity new pesticides for preventing and controlling wheat midge, Yongnian County conducted a 5% chlorpyrifos granules control test on wheat midge in 2006 (5% chlorpyrifos granules supplied by Shandong Huayang Science and Technology Co., Ltd., hereinafter referred to as chlorpyrifos). 1. Materials and methods. Test at