摘要
[目的]明确4种增效助剂对烟草常用化学农药表面张力的影响,为增效助剂在烟草化学农药减量增效中的应用提供技术支撑。[方法]通过测定4种增效助剂使用下9种烟草常用化学农药表面张力值,以烟草叶片临界表面张力为判定指标,筛选适用于不同化学农药的增效助剂种类和剂量。[结果]烟草叶片临界表面张力为30.52 mN/m,除5%高氯甲维盐微乳剂和10%溴氰虫酰胺可分散油悬浮剂外,其余7种烟草常用化学农药推荐剂量的表面张力明显高于烟草叶片临界表面张力;4种增效助剂GY-Tmax、007、GY-T1602和S903的临界表面张力分别为32.38、27.62、26.82、20.77 mN/m。4种增效助剂均能降低农药表面张力,使其接近烟叶临界表面张力,而不同增效助剂的使用剂量因农药种类而异。[结论]合理使用4种增效助剂GY-Tmax、007、GY-T1602和S903可降低烟草常用化学农药表面张力,提高农药在烟草叶片上的湿润展布性能。
[Objective]To study the effects of four synergists on surface tension of common chemical pesticides in tobacco,so as to provide technical support for the application of synergists in the reduction and enhancement of chemical pesticides in tobacco.[Method]By measuring the surface tension values of nine common tobacco chemical pesticides with the applications of four synergists,and taking the critical surface tension of tobacco leaves as the judgment criterion,the types and doses of synergists that could be suitable for different chemical pesticides were selected.[Result]The critical surface tension of tobacco leaves was 30.52 mN/m,except for 5%carbaryl chloride microemulsion and 10%bromocyanamide dispersible oil suspension,the surface tension values of the recommended dose of the other seven common chemical pes⁃ticides in tobacco were significantly higher than the critical surface tension value of tobacco leaves.The critical surface tension values of the four synergists including GY⁃Tmax,007,GY⁃T1602,and S903 were 32.38,27.62,26.82 and 20.77 mN/m,respectively.Such four synergists could reduce the surface tension of pesticides and made it close to the critical surface tension of tobacco leaves,and the dosage of different syn⁃ergists varied with the types of pesticides.[Conclusion]The proper applications of four synergists such as GY⁃Tmax,007,GY⁃T1602,and S903 can reduce the surface tension of common chemical pesticides in tobacco and improve the wet distribution performance of pesticides on to⁃bacco leaves.
作者
夏鹏亮
任晓红
高加明
李锡宏
孔凡玉
方松
林樱楠
XIA Peng-liang;REN Xiao-hong;GAO Jia-ming(Enshi Tobacco Company of Hubei Province,Enshi,Hubei 445000;Hu-bei Corporation of China National Tobacco Corporation,Wuhan,Hubei 430030)
出处
《安徽农业科学》
CAS
2023年第16期127-129,136,共4页
Journal of Anhui Agricultural Sciences
基金
湖北省烟草公司科技项目“基于精准施药和协同增效的农药减施技术研究与应用”(027Y2021-013)。
关键词
增效助剂
化学农药
表面张力
烟草
Synergists
Chemical pesticides
Surface tension
Tobacco
