河南新郑县为我国枣主要产区之一,每年都受到枣尺蠖不同程度的危害,对枣树生长和产量威胁很大。多年来由于连续喷布六六六和滴滴涕等农药,害虫抗药性不断增强,防治效果愈来愈低。为此,我们于1980和1981年用法国产的2.5％溴氰菊酯乳剂进行了室内药效测定、田间防治试验和大面积防治示范,均获得了良好的效果(见下表)。 Xinzheng County, Henan Province, one of the main producing areas of jujube, jujube every year by different degrees of harm, jujube growth and yield a great threat. Over the years due to continuous spraying of 666 and DDT and other pesticides, pest resistance continues to increase, lower and lower prevention and treatment. For this reason, we achieved good results with the domestic 2.5% deltamethrin emulsions in 1980 and 1981, both in field efficacy trials, field trials and large-scale prevention and treatment demonstrations (see table below).