<FONT face="Verdana">甲维盐微乳剂药液在水稻叶面的行为分析 </FONT>

范鹏,顾中言,徐德进,许小龙,徐广春

doi:10.3969/j.issn.1001-7216.2010.05.010

中国水稻科学 >

2010 , Vol. 24 >Issue 5: 503 - 508

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.05.010

研究报告

甲维盐微乳剂药液在水稻叶面的行为分析

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¹江苏省农业科学院植物保护研究所，江苏南京 210014； ²扬州大学园艺与植物保护学院，江苏扬州 225009； *通讯联系人， E-mail: guzy@jaas.ac.cn

收稿日期: 1900-01-01

修回日期: 1900-01-01

网络出版日期: 2010-09-10

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Action Analysis of Drops of EmamectionBenzoate Microemulsion on Rice Leaf

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¹Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; ²College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; *Corresponding author, E-mail: guzy@jaas.ac.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-09-10

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摘要

研究了由05%甲维盐微乳剂配成的浓度为078~1250 mg/L药液在水稻叶上的表面张力特性及展布情况。结果表明,156~1250 mg/L甲维盐微乳剂药液的表面张力小于水稻叶临界表面张力。将005 mL药液点滴在水稻叶上的瞬间，不同浓度药液的接触角不同，但随时间的推移而变小，并且药液浓度越高接触角变小就越快，最终，药液中表面活性剂达到临界胶束浓度的药滴(312、625和1250 mg/L)在水稻叶上完全展布，而药液中表面活性剂没有达到临界胶束浓度的药滴(156 mg/L)则不能在水稻叶上完全展布。在相同的浓度下，156～100 mg/L的甲维盐微乳剂药液的表面张力小于水稻叶的临界表面张力，而甲维盐乳油药液的表面张力大于水稻叶的临界表面张力，并且前者在水稻叶面的滞留量明显多于后者。盆栽试验表明，相同浓度下微乳剂的保苗效果始于乳油，证明了微乳剂对药剂理化性能的改善。

关键词： 溶液; 表面张力; 展布; 滞留量; 药效试验

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范鹏,顾中言,徐德进,许小龙,徐广春 . 甲维盐微乳剂药液在水稻叶面的行为分析 [J]. 中国水稻科学, 2010 , 24(5) : 503 -508 . DOI: 10.3969/j.issn.1001-7216.2010.05.010

Abstract

Surface tension and spreading characteristics of drops of 0.5% emamectionbenzoate microemulsion(ME) on rice leaf were studied at concentrations of 0.78-12.50 mg/L. Results showed that the surface tensions of emamectionbenzoate ME at 156, 312, 625 and 1250 mg/L were smaller than the critical surface tension of rice leaf. The contact angles of the drops of these solutions were different when the drops were dropped onto rice leaf. However, as time went on, the contact angle diminished, and the diminishing speed increased with rising concentration. Finally, the drops that the surfactant reached the CMC (critical micelle concentration) in these solutions at 312, 625 and 1250 mg/L spread completely, whereas the drops that the surfactant did not reach the CMC in the solution at 156 mg/L could not spread completely. The surface tensions of emamectionbenzoate ME were smaller than the critical surface tension of rice leaf at 156-100 mg/L while the surface tension of the same concentration of emamectionbenzoate emulsifiable concentrate(EC) were greater than the critical surface tension of rice leaf, and the dynamic retention of the former on rice leaf was significantly greater than the latter. Pot experiment showed that under the same concentration, emamectionbenzoate ME showed an improved protecting effect on Chilo suppressalis compared to emamectionbenzoate EC. It testifies that micro emulsion could improve physical and chemical properties of the agents from the perspective of efficacy.

Key words： solution; surface tension; spreading; dynamic retention; insecticide efficacy trial

参考文献

[1]胡美英, 黄炳球, 肖整玉. 表面活性剂对杀虫剂的增效机制及药效研究.华南农业大学学报, 1998, 19(3): 41-46.

[2]屠豫钦.农药剂型和制剂与农药的剂量转移. 农药学学报,1999, 1(1): 1-6.

[3]顾中言, 许小龙, 韩丽娟. 一些药液难在甘蓝、水稻和小麦表面润湿展布的原因分析.农药学学报, 2002, 4(2): 75-80.

[4]Wirth W, Storp S, Jacobsen W. Mechanism’s controlling leaf retention of agricultural spray solutions. Pesticide Sci, 1991, 33: 411-420.

[5]Holloway P J, Ellis M C B, Webb D A, et al. Effects of some agricultural tank-mix adjuvants on the deposition efficiency of aqueous sprays on foliage.Crop Prot, 2000, 19(1): 27-37.

[6]刘程, 张万福, 陈长明.表面活性剂应用手册. 北京: 化学工业出版社, 1996： 28-43.

[7]范鹏, 顾中言, 徐德进, 等. 能在水稻叶上润湿铺展的甲维盐微乳剂的研制. 江苏农业学报, 2009, 25(5): 1019-1024.

[8]中国标准出版社.化学工业标准汇编——表面活性剂.北京: 中国标准出版社,1997: 48-53.

[9]顾中言.植物的亲水疏水特性与农药药液行为的分析. 江苏农业学报, 2009, 25(2): 276-281.

[10]顾中言, 陈明亮, 许小龙, 等. 表面活性剂TX-10对溶液表面张力及水稻植株持液量的影响. 江苏农业学报, 2006, 22(4): 394-397.

[11]顾中言, 陈明亮, 许小龙, 等.液体在结球甘蓝叶面上的行为趋势分析.江苏农业学报, 2006, 23(6): 568-572.

[12]顾中言, 许小龙, 韩丽娟. 不同表面张力的杀虫单微乳剂药滴在水稻叶面的行为特性.中国水稻科学, 2004,18(2): 176-180.

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