论文部分内容阅读
试验结果表明,药剂防治红豆草害虫的最适时期是现蕾期(5月中、下旬).70%氧化乐果防虫效果最显著,药效高且残效期较长,对天敌昆虫的毒性亦较小.80%敌敌畏喷雾(1∶1200)后1—3天内具有较高的药效.
The results showed that the optimum period for the prevention and treatment of red bean pests was the budding stage (middle and late May) .70% omethoate had the most significant pest control effect, high efficacy and long residual period, and was also toxic to natural enemies Small .80% dichlorvos spray (1: 1200) after 1-3 days with high efficacy.