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为开拓植物油复配剂防治农作物害虫的应用范围,我们与有关单位协作,用植物油复配剂对棉花红蜘蛛、红铃虫和棉蚜三种害虫进行了田间防治试验获得良好结果。 防治棉红蜘蛛试验:1983年在棉花红蜘蛛发生期间,采用定株定叶挂牌标记的方法,设单用、复配和不施药(空白对照)等6个处理,以株数为单位,重复5次,随机排列。施药前逐株逐叶查明虫量,分别记录成螨和若螨。按规定用药量加水200斤,用长江10型喷雾器喷雾。施药后1天和3天调查虫口数量,计算校正防效。试验结果(表1)表明,苦楝油
In order to develop the application range of vegetable oil compounding agent to prevent and control crop pests, we cooperated with the relevant units and conducted good field control experiments on three kinds of pests such as spider mite, pink bollworm and cotton aphid with vegetable oil compounding agent. Control of cotton spider mite test: In 1983, during the occurrence of cotton spider mite, the method of fixing the leaves with fixed tag, set alone, with and without drug (blank control) and other six treatments, the number of plants as a unit, repeat 5 times, arranged randomly. Pest control by the leaf by the leaf before spraying pesticides, were recorded as mites and nymphs. The amount of water required to add 200 pounds of water, with the Yangtze 10 spray sprayer. One and three days after spraying the number of insect population survey to calculate the correct control effect. The test results (Table 1) show that neem oil