3%卵磷脂·维生素E对草甘膦的增效作用及在植物体内吸收与传导的影响  

Synergism effect of 3% lecithin+vitamin E on glyphosate and its absorption conductivity in plants

作　　者：相世刚 强胜 夏爱萍 李春林 左娇 宋小玲 张瑞萍 XIANG Shigang;QIANG Sheng;XIA Aiping;LI Chunlin;ZUO Jiao;SONG Xiaoling;ZHANG Ruiping(Weed Research Lab.,College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,China;Beijing Plum Agrochemical Trading Co.,Ltd.,Beijing 100025,China;Jiangsu AgraForUm Soil Remediation Co.,Ltd.,Jiangsu Postgraduate Workstation,Nantong 226300,Jiangsu Province,China)

机构地区：[1]南京农业大学生命科学学院杂草研究室,南京210095 [2]北京成禾佳信农资贸易有限公司,北京100025 [3]江苏爱佳福如土壤修复有限公司江苏省研究生工作站,江苏南通226300

出　　处：《农药学学报》2023年第2期414-421,共8页Chinese Journal of Pesticide Science

基　　金：校企合作项目“安融乐对除草剂的增效机理及应用技术研发”.

摘　　要：为明确助剂3%卵磷脂·维生素E(商品名为安融乐■,AnnGro■)对草甘膦的增效作用及其在植物体内的吸收与传导的影响,以空心莲子草Alternanthera philoxeroides为试验材料,通过生物测定计算了安融乐■分别与2种草甘膦异丙胺盐水剂(商品名分别为“发达”和“农达”)混用后的ED_(50)值和ED_(90)值,以及药液表面张力和药液与叶面的接触角;利用同位素示踪技术测定了^(14)C-草甘膦在空心莲子草体内的吸收与传导。结果表明:与草甘膦异丙胺盐水剂单用相比,安融乐■与2种草甘膦异丙胺盐水剂混用后空心莲子草的死亡时间均提前1 d;ED_(50)值和ED_(90)值分别降低34.9%、21.4%和35.9%、23.3%;药液表面张力和药液与叶面的接触角均显著降低。处理4 d后,^(14)C-草甘膦+安融乐■处理的空心莲子草体内的^(14)C-草甘膦总吸收量、在植物体内总传导量和药剂向下传导量分别是单用^(14)C-草甘膦处理的2.33、2.34和2.36倍。综上,安融乐■通过增加空心莲子草对草甘膦的吸收和体内传导,从而提高了草甘膦对空心莲子草的防除效果。-In order to clarify the synergistic effect of 3%lecithin+vitamin E(AnnGro■)on glyphosate and its absorption and conduction characteristics in plants.Alternanthera philoxeroides was taken as experimental material.The ED_(50) and ED_(90) values of AnnGro■mixed with two glyphosate-isopropylammonium(FD and RD)were calculated by bioassay,and the surface tension,and the contact angle of the liquid with the leaf surface were tested.The absorption and conduction of ^(14)C-glyphosate in A.philoxeroides were measured by isotope tracer technique.The results showed that A.philoxeroides died one day earlier when treated by two herbicides mixed with AnnGro■than by the herbicides alone.ED_(50)and ED_(90)values were significantly decreased by 34.9%,21.4%,and 35.9%,23.3% respectively.The surface tension and the contact angle between the liquid and the leaf were significantly decreased.Four days after treatments,the total absorption amount of ^(14)C-glyphosate,the total conduction amount in plant and the downward conduction amount of^(14)C-glyphosate in the treatment of ^(14)C-glyphosate+AnnGro■were 2.33,2.34 and 2.36 times compared with the treatment of ^(14)C-glyphosate only.In conclusion,AnnGro■improved the control efficacy of glyphosate on A.philoxeroides by increasing the absorption and the conduction in A.philoxeroides.

关 键 词：3%卵磷脂·维生素E ^(14)C-草甘膦 增效作用 空心莲子草 吸收 传导 

分 类 号：S451.1[农业科学—植物保护]