| 邱占奎1,3;袁会珠1;李永平2;纪明山3;黄雄英1;逄森1.添加有机硅表面活性剂对低容量喷雾防治小麦蚜虫的影响[J].植物保护,2006,32(2):34-37. |
| 添加有机硅表面活性剂对低容量喷雾防治小麦蚜虫的影响 |
| Influence of the surfactant Silwet408 on wheat aphids control efficacy using low volume spraying |
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| DOI： |
| 中文关键词: 表面活性剂 Silwet408 低容量喷雾 铺展面积 小麦蚜虫 防效 |
| 英文关键词:surfactants Silwet408 low volume spraying spreading area wheat aphids efficacy |
| 基金项目: |
| 邱占奎1 3;袁会珠1;李永平2;纪明山3;黄雄英1;逄森1 |
| 1.中国农业科学院植物保护研究所农业部农药化学与应用技术重点开放实验室 北京100094;2.全国农业技术推广服务中心 北京100026;3.沈阳农业大学 沈阳110161 |
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| 中文摘要: |
| 室内试验表明,有机硅表面活性剂Silwet408、非离子表面活性剂OP-10和JFC可显著降低药液的表面张力,其中Silwet408在质量分数为0.05%时可使水的表面张力降到22.05 mN/m,表面活性最强。当药液中含有0.001%的有机硅表面活性剂Silwet408时,其在小麦叶片上的接触角即开始显著减小,且在小麦背面的接触角小于在正面的接触角。在10%吡虫啉可湿性粉剂稀释2500倍药液中添加Silwet408,药液的表面张力和其在小麦叶片上的接触角明显降低,雾滴在小麦叶片上扩展面积明显增大。进一步田间试验表明,使用手持离心式低容量喷雾机喷雾,在10%吡虫啉可湿性粉剂药液中添加质量分数为0.05%和0.1%的Silwet408,可显著增加对小麦蚜虫的防治效果。 |
| 英文摘要: |
| The laboratory test results showed that organic silicone surfactant Silwet408,nonionic surfactant OP-10 and JFC could all decrease the surface tension of insecticide solutions significantly.The surface tension was 22.05 mN/m when adding 0.05% Silwet408 into water.Silwet408 presented the best surface activity.The surface tension and contact angle on the wheat leaf surface decreased significantly after Silwet408 was added into 10% imidacloprid WP 2500-fold dilution.The spreading area of spray droplets on wheat leaves was much larger than that without Silwet408.The field trial results showed that it could increase the control efficacy of wheat aphids significantly after(0.05%) and 0.1% Silwet408 were added into 10% imidacloprid WP 2500-fold dilution using low volume spraying method with hand-carried centrifugal sprayer. |
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