| 2.5%高效氟氯氰菊酯水乳剂在苹果叶片表面的润湿性能 |
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| 引用本文： | 郭瑞峰,高越,张鹏九,刘中芳,封云涛,张润祥,庾琴,范仁俊.2.5%高效氟氯氰菊酯水乳剂在苹果叶片表面的润湿性能[J].农药学学报,2015,17(2):215-219. |
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| 作者姓名： | 郭瑞峰 高越 张鹏九 刘中芳 封云涛 张润祥 庾琴 范仁俊 |
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| 作者单位： | 1.山西省农业科学院 植物保护研究所, 农业有害生物综合治理山西省重点实验室, 太原 030032 |
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| 基金项目： | 公益性行业(农业)科研专项(200903033-07);山西省科技攻关项目(20100311037);山西省科技星火项目(20130511024). |
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| 摘 要： | 采用光学视频接触角测量仪测定了苹果叶片的表面自由能,以及2.5%高效氟氯氰菊酯水乳剂(beta-cyfluthrin EW)稀释液的表面张力及静态接触角、0~60 s动态接触角。结果表明:苹果叶片近轴面的表面自由能为52.76 m J/m2,以极性分量为主导;而远轴面的表面自由能为21.79 m J/m2,且以色散力分量(非极性分量)为主导。高效氟氯氰菊酯水乳剂2 000倍稀释液的表面张力为52.45 m N/m,与25 g/L高效氟氯氰菊酯乳油3 000倍稀释液的相近,远低于去离子水的表面张力74.65 m N/m;其静态接触角与25 g/L高效氟氯氰菊酯乳油3 000倍稀释液的无显著差异,且在0~60 s内接触角下降趋势最快。研究表明:苹果叶片的近轴面比远轴面更易被药液润湿;在苹果园喷施2.5%高效氟氯氰菊酯水乳剂时,药液的稀释倍数不宜太高,以2 000倍为最佳。
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| 关 键 词： | 高效氟氯氰菊酯 水乳剂 润湿性 接触角 表面自由能 表面张力 苹果叶片 |
| 收稿时间： | 2014/9/15 0:00:00 |
Wettability of 2.5% beta-cyfluthrin emulsion in water on surface of apple leaves |
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| Guo Ruifeng,Gao Yue,Zhang Pengjiu,Liu Zhongfang,Feng Yuntao,Zhang Runxiang,Yu Qin and Fan Renjun.Wettability of 2.5% beta-cyfluthrin emulsion in water on surface of apple leaves[J].Chinese Journal of Pesticide Science,2015,17(2):215-219. |
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| Authors: | Guo Ruifeng Gao Yue Zhang Pengjiu Liu Zhongfang Feng Yuntao Zhang Runxiang Yu Qin and Fan Renjun |
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| Institution: | 1.Institute of Plant Protection, Shanxi Academy of Agricultural Sciences, Shanxi Key Laboratory of Integrated Pest Management in Agriculture, Taiyuan 030032, China |
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| Abstract: | The surface free energy (SFE) of apple leaf, as well as the surface tension, static contact angle and dynamic contact angle in 0-60 s of diluted solution of 2.5% beta-cyfluthrin emulsion in water (EW) on apple leaf surface were determined by using optical contact angle measuring device.The results showed that the SFE value of the adaxial surface of apple leaf was about 52.76 mJ/m2, and the polarity component was dominant; while the SFE value of the abaxial surface was about 21.79 mJ/m2, and the dispersion component was dominant. The surface tension of 2 000-fold dilution of 2.5% beta-cyfluthrin EW on apple leaf was close to that of 3 000-fold dilution of 25 g/L beta-cyfluthrin emulsifiable concentrate (EC), but much lower than that of deionized water. There was no significant difference between the static contact angle of EW's 2 000-fold dilution and EC's 3 000-fold dilution, and the contact angle of EW's 2 000-fold dilution in 0-60 s declined the fastest. The results suggested that the adaxial surface of apple leaf was more wettable than the abaxial surface; when applied the 2.5% beta-cyfluthrin EW to apple trees, the best diluted solution was 2 000-fold. |
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| Keywords: | beta-cyfluthrin emulsion in water wettability contact angle surface free energy surface tension apple leaf |
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