植环所探索一种叶绿素荧光检测方法探测助剂对除草剂的增效效果

发布时间：2020年03月18日 19:01　　浏览次数：920

选用适合的除草剂喷雾助剂是提高除草剂药效，降低除草剂有效成分使用量、提高环境安全性的重要手段。本研究采用叶绿素荧光检测的方法通过实验室和温室试验研究了甲基化植物油（MSO）和有机硅2种常用助剂对苯唑草酮防除禾本科杂草狗尾草（SetariafaberiHerrm.）和阔叶杂草苘麻（Abutilon theophrastiMedik.）的影响作用。研究结果表明，在用药后2-5天两种杂草的最大光子利用率（Fv/Fm）添加MSO助剂处理组显著低于苯唑草酮单用组，而添加有机硅助剂组与苯唑草酮单用组差异则不显著。该结果与常规生物量测定结果一致性良好。证明了植物叶片叶绿素荧光检测法在快速、无损评价除草剂助剂增效效果方面的有效性。

Fig.1. Analysis of Fv/Fm value of giant foxtail (left) and velvetleaf (right) treated by 4 different herbicide solutions during 2-5 days after treatment (DAT). Alone means topramezone was applied alone; Organosilicone means topramezone was applied with organosiilicone adjuvant; MSO means topramezone was applied with MSO adjuvant; control means treated with tap water.

Fig.2. The chlorophyll fluorescence images of giant foxtail(above)and velvetleaf (below)treated by 4 different herbicide solutions at 3 days after treatment (DAT). Alone means topramezone was applied alone; Organosilicone means topramezone was applied with organosiilicone adjuvant; MSO means topramezone was applied with MSO adjuvant;control means applied with tap water.

Fig.3. Pictures ofgiant foxtail(left) andvelvetleaf(right) taken at 3 weeks after application. M-control means treated with tap water; M-Alone means topramezone was applied alone; M-Org means topramezone was applied with organosiilicone adjuvant; M-MSO means topramezone was applied with MSO adjuvant.

研究论文“Chlorophyll Fluorescence Measurement: A New Method to Test the Effect of Two Adjuvants on the Efficacy of Topramezone on Weeds”于2018年在国际会议论文（EI收录）Computer and Computing Technologies in Agriculture X上发表。植环所农药与农田环境研究室张锦伟博士为第一作者，本研究由国家博士后科学基金(2018M631382)资助。

https://www.researchgate.net/publication/330263703_Chlorophyll_Fluorescence_Measurement_A_New_Method_to_Test_the_Effect_of_Two_Adjuvants_on_the_Efficacy_of_Topramezone_on_Weeds_11th_IFIP_WG_514_International_Conference_CCTA_2017_Jilin_China_August_12-