| 吴青君;徐宝云;徐维红;张友军;朱国仁.敌死虫对不同发育阶段烟粉虱的生物活性测定[J].植物保护,2002,28(4):11-13. |
| 敌死虫对不同发育阶段烟粉虱的生物活性测定 |
| Bioassays on D-C Tron to Bemisia tabaci of different developmental stages |
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| DOI： |
| 中文关键词: 烟粉虱 敌死虫 矿物油 生物活性 |
| 英文关键词:Bemisia tabaci D-C Tron petroleum oil biological activity |
| 基金项目: |
| 吴青君;徐宝云;徐维红;张友军;朱国仁 |
| 中国农业科学院蔬菜花卉研究所 北京100081 |
| 摘要点击次数: 687 |
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| 中文摘要: |
| 敌死虫对烟粉虱成虫具有较强的驱避作用 ,99.1%敌死虫200、100、50倍液药后 2h～120h对黄瓜上烟粉虱的驱避率均在90%以上 ,50倍液处理药后3d的驱避率为98%～100%。药剂处理的非洲菊上烟粉虱成虫产卵量显著低于对照。敌死虫对烟粉虱卵具有一定活性 ,致死中量为10468.6mg/kg ;对若虫活性较高 ,对1、2、3龄若虫的致死中量分别为165.81、199.46、232.38mg/kg ,稀释倍数分别为5976、4968、4264倍。 |
| 英文摘要: |
| The biological activities of D-C Tron, a petroleum-based mineral oil, to Bemisia tabaci of different developmental stages were tested. The results showed that the oil was strongly repellent against adult whiteflies. The repellent rate was over 90% after 2h-120 h at 200, 100 and 50 dilutions on cucumber. And the repellent rate was 98%-100% after 3d at 50 dilution. The adults laid less eggs on sprayed Gerbera jamesonii. The ovicidal activity was relatively low, with LD50 of 10 468 6 mg/kg. The larvicidal activity against the first, second and third instars was high, and the LD 50 were 165 81, 199 46 and 232 38 mg/kg, respectively at 5976, 4968 and 4264 dilutions. |
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