| 摘要: |
| 采用药膜法测定了溴氰菊醋、甲氰菊酯、氰戊菊酯和三氟氯氰菊酯对广赤眼峰（Trichograma evanescens Westwood）、螟黄赤眼峰（T.confusum Wiggiani）、松毛虫赤眼峰（T. dendrolini Masts.）成蜂的毒力。结果表明，不同药剂对同一种赤眼峰成蜂的毒力不同；不同赤眼蜂种群的成峰对同一药剂的反应差异也较大，其中溴氰菊酯的毒力最大（ＬＣ50）＜２．３０μｇ·ｍＬ-1），甲氰菊酯相对较小（ＬＣ3＞１２．５０μｇ·ｍＬ-1）；３种赤眼峰中，以广赤眼蜂对药剂反应较迟钝，忍受能力较强。 |
| 关键词: 菊酯类杀虫剂，赤眼蜂，毒力测定 |
| DOI： |
| 分类号:S476.3 |
| 基金项目:陕西省自然科学基金项目 |
|
| Toxkic Effects of Several Pyrethroid Insecticides on Three Species of Trichogrammatids |
|
Yang Chongzhen Wang Xinglin Zhang XingResearch and Service Centre of Unpolluted Chemicals,Northwestern Agricultural University,Yangling,Shaanxi,712100),Yang Chongzhen Wang Xinglin Zhang XingResearch and Service Centre of Unpolluted Chemicals,Northwestern Agricultural University,Yangling,Shaanxi,712100),Yang Chongzhen Wang Xinglin Zhang XingResearch and Service Centre of Unpolluted Chemicals,Northwestern Agricultural University,Yangling,Shaanxi,712100)
|
| Abstract: |
| The toxicity of several pyrethroids(decamenthrin , fenpropathrin,fenvalerate and cyhalathrin ) to Trichograma evanescens Westwood,T.confusum Wiggiani and T. dendrolini Masts. was determined by means of toxicfilm. The results indicated that different pesticides showed different activities to the same adult trichogrammatids and different species of adult trichogrammatids vary in their reactions to the same pesticide. Decamethrinwas the most powerful one among all these pesticides and T.evanescens was more tolerable than the other two. |
| Key words: pyrethroids,trichogrammatids,bioassay |
