摘要
为寻求防治顽固性害虫稻纵卷叶螟的高效农药,通过室内配方筛选试验,甲维盐与毒死蜱复配1:99配比对稻纵卷叶螟杀虫活性最高,共毒系数206.65,增效显著。田间药效试验中,20%甲维.毒死蜱WP速效与持效性均好,亩用80～100g,对稻纵卷叶螟杀虫效果为88.6%～94.3%,保叶效果81.9%,对水稻无不良影响,是替代高毒农药的优良药种。
The trials were conduced on the efficient pesticide against the rice case worm, Cnaphalocrocis medinalis （Guenee） which was a kind of stubborn pests. The results showed that insecticidal activity was the highest when emamectin benzoate mixed with chlorpyrifos in the ratio of I ： 99 through formula selection in laboratory. CTC is 206.65, and efficiency is very significant. The result of the field trial showed that emamectin benzoate ＋ chlorpyrifos 20% WP worked very quickly and maintained very long time with 1.2 to 1.5 kg/hm^2, its insecticidal effect against the rice case worm was 88.6% to 94.3%, the effect of protecting rice leaves was 81.9%, and had no bad impact on rice, so it was an efficient pesticide to replace high toxic pesticides.
出处
《现代农药》
CAS
2008年第5期52-54,共3页
MODERN AGROCHEMICALS
关键词
甲维盐
毒死蜱
纵卷叶螟
共毒系数
防治效果
emamectin benzoate
chlorpyrifos
Cnaphalocrocis medinalis
CTC
control effect
