| 宋丽雯, 张新虎, 沈慧敏*.1.6%瑞香狼毒素水乳剂对4种蔬菜害虫的作用方式比较[J].植物保护,2017,43(1):218-223. |
| 1.6%瑞香狼毒素水乳剂对4种蔬菜害虫的作用方式比较 |
| Comparison of different actions of 1.6% daphneantoxin EW on four vegetable pests |
| 投稿时间：2016-01-21 修订日期：2016-04-05 |
| DOI： |
| 中文关键词: 瑞香狼毒素 菜青虫 小菜蛾 豌豆蚜 截形叶螨 |
| 英文关键词:daphneantoxin Pieris rapae Plutella xylostella Acyrthosiphon pisum Tetranychus truncatus |
| 基金项目:公益性行业(农业)科研专项 (201103020); 甘肃省农业生物技术研究与应用开发项目(GNSW-2012-20); 甘肃省自然科学基金(1606RJZA025) |
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| 中文摘要: |
| 采用叶片夹毒法、微量点滴法和玻片浸渍法等方法测定了1.6%瑞香狼毒素水乳剂对菜青虫、小菜蛾、豌豆蚜和截形叶螨的杀虫效果。结果表明:处理24 h后, 在触杀活性试验中, 1.6%瑞香狼毒素水乳剂对试虫的毒力大小为菜青虫>小菜蛾>豌豆蚜>截形叶螨; 在内吸活性试验中, 1.6%瑞香狼毒素水乳剂对截形叶螨和豌豆蚜的LC50分别为149.22 mg/L和101.76 mg/L, 均小于触杀作用下的219.10 mg/L和165.25 mg/L, 表明1.6%瑞香狼毒素水乳剂对豌豆蚜和截形叶螨内吸毒性明显优于触杀作用; 在胃毒活性试验中, 1.6%瑞香狼毒素水乳剂对菜青虫和小菜蛾的LC50分别为342.82 mg/L和407.34 mg/L, 而触杀作用下的LC50为58.61 mg/L和75.30 mg/L, 表明该药剂对菜青虫和小菜蛾有较强的触杀作用和一定的胃毒作用。 |
| 英文摘要: |
| The activity of 1.6% daphneantoxin EW on Pieris rapae, Plutella xylostella, Acyrthosiphon pisum, Tetranychus truncatus was determined by slide slip method, topical application and leaf-sandwich. Laboratory bioassay results showed that the order of contact toxicity of 1.6% daphneantoxin EW against 4 insects was P. rapae>P. xylostella>A. pisum>T. truncatus. Systemic toxicity analysis indicated that the median lethal concentration (LC50) values for T. truncatus and A. pisum were 149.22 mg/L and 101.76 mg/L, respectively, significantly lower than that of contact toxicity (219.10 mg/L and 165.25 mg/L). Stomach toxicity test by leaf-sandwich indicated that the median lethal concentrations (LC50) for P.rapae and P. xylostella were 342.82 mg/L and 407.34 mg/L, respectively, while the contact toxicity test showed the LC50 values for P. rapae and P. xylostella were 58.61 mg/L and 75.30 mg/L, respectively. The above results demonstrated that 1.6% daphneantoxin EW had good contact toxicity and some stomach toxicity on P. rapae and P. xylostella. |
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