| 摘要: |
| 通过室内生物活性测定和田间防治试验,灭幼脲Ⅰ号对美国白蛾卵死亡率与浓度的关系符合Logistic模型,杀卵效果随日龄延长而下降。施药后2～6天开始大量死亡,浓度在10ppm以上杀虫效果达100％,且具有较长的残效期。若与低浓度敌百虫混用,可加速幼虫死亡,并增效10％左右。 |
| 关键词: 美国白蛾,灭幼脲Ⅰ号,几丁质,生物杀虫剂,敌百虫 |
| DOI： |
| 分类号: |
| 基金项目: |
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| STUDIES ON THE CONTROL OF THE FALL WEBWORM (Hyphantria cunea Drury) WITH DIMILIN-Ⅰ |
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Liu Shaoyou Wang Yinglun,Liu Shaoyou Wang Yinglun
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| Abstract: |
| Dimlin is a compound of Benzoylphenylurea, and inhibits the synthesization of chitin. Through bioassay in the laboratory and control test in the field, Dimilin-Ⅰ was found to have a logistic equation on the egg mortality of the fall webworm (Hyphantria cunea Drury). The effect on egg mortality decreased with the increase of days of egg development. A large number of larvae of the fall webworm began to die in 2-6 days after Dimilin-Ⅰ had been applied. The mortality of larvae was 100%when a dosage of dimi- lin of more than 10ppm was applied. Moreover, if Dimilin-Ⅰ was mixed with Trichlorfon, it could accelerate the death of larvae and increase their mertality by 10%. |
| Key words: fall webeorm,Dimilin-Ⅰ,cutin,biological insectici,dipterex |
