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杀灭菊酯和溴氰菊酯(即敌杀死)是我国近几年引进的两种拟除虫菊酯类农药。为明了这两种农药对棉蚜和棉红铃虫的防治效果,以及对棉花产量和品质的影响,我们在1981和1982年进行了试验,取得比较理想的结果。 试验方法 防治棉蚜的试验面积5面,设5个处理,重复5次,共设25个小区,以清水作对照,6月上旬施药,药后定期定点挂牌调查各处理虫口减退率。防治棉红铃虫的试验面
Filtrate and deltamethrin (ie, kill the enemy) is China’s introduction of two kinds of pyrethroid pesticides in recent years. In order to understand the control effect of these two kinds of pesticides on cotton aphid and cotton bollworm and their effects on the yield and quality of cotton, we conducted experiments in 1981 and 1982 and achieved satisfactory results. Test methods Aphis gossypii test area 5 sides, set 5 treatments, repeated 5 times, a total of 25 plots, with clear water as a control, spraying in early June, regular fixed-point drug listing to investigate the reduction rate of each population. Prevention and control of cotton bollworm test surface