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1989年,研究了富β体氰戊菊酯对棉铃虫的室内毒力。盆栽和小区试验结果表明:(1)对棉铃虫幼虫的触杀毒力是氰戊菊酯的1.59～2.40倍,是消旋菊酯的1.16～1.36倍;(2)小区试验每hm~275.0～93.8g与氰戊菊酯和消旋菊酯150g的效果相当,对棉铃虫的防效显著,保蕾效果均在90%以上,增产幅度为8.5%～14.1%;(3)以每hm~237.5～93.8g有效剂量处理后,与氰戊菊酯和消旋菊酯150g的治虫残效期均在7d以上;(4)有效剂量提高至3kg/hm~2时才对棉花产生药害,常规使用剂量下对棉花极为安全。
In 1989, the indoor toxicity of β-rich fenvalerate to cotton bollworm was studied. The results of pot and plot test showed that: (1) The contact toxicity to cotton bollworm larvae was 1.59 ~ 2.40 times that of fenvalerate and 1.16 ~ 1.36 times as much as that of fenvalerate. (2) 93.8g had the same effect with fenvalerate and fenpropathrin 150g and had significant effect on cotton bollworm. The effect of bollworm protection was over 90% and the rate of increase was 8.5% ~ 14.1%. (3) 237.5 ~ 93.8g effective dose, fenvalerate and fenpropathth was 150g repellency were above 7d; (4) the effective dose increased to 3kg / hm ~ 2 when the cotton phytotoxicity, conventional The use of cotton is extremely safe.