3% 卵磷脂·维生素E悬乳剂对3种化学除草剂防除加拿大一枝黄花的增效作用

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中图分类号：S451.2；S482.92 文献标志码：A 文章编号：1003-935X（2025）03-0064-09

Synergism of Lecithin ·Vitamin E 3% SE on Three Chemical Herbicides for the Control of Solidago canadensis L.

YUAN Rong，YU Haiyan，JIN Bizhong （Nanjing Yuhuatai District Agricultural Comprehensive Service Center in Jiangsu Province，Nanjing 210o12，China）

Abstract：Toclarifywhether lecithin ⋅⋅ vitamin E 3% SE combined could improve the control efficacy of three chemical herbicides on invasive weed Solidago canadensis L.，including isoxafenacil ·glyphosate 31% OD，oxyfluorfen·glyphosate 40% WP，and glyphosate ⋅⋅ triclopyr 70% SP.Therefore，a field experiment was conducted in abandoned farmland in Nanjing during 2O24. Results showed that lecithin ⋅ vitamin E3% SE significantly enhanced control efficacy of all three herbicides against S . canadensis L.，particularly during the early stage from 3 to15 days after application.The addition of lecithin·vitamin E 3% SE significantly enhanced injury comprehensive index of isoxafenacil ⋅⋅ glyphosate with the most significantly increase at3days and 5 days after application，reaching 13.15 and 16.56 percentage points，respectively.The synergism of the other two herbicideswas similar withan increase ranging between 2.02% and 9. 51% from 3 to 67 days after application.While all three tested herbicides added lecithin·vitamin E 3% SE，plant height of S.canadensisL.significantly reducedat15，34 daysafterapplication，with reduction of 8.41%-16.57%compared to the herbicidesalone.At15daysafter application，fresh weight control was significantly improved by4.10-13.98 percentage points.Moreover，theaddition of lecithin·vitamin E 3% SE markedly inhibited emergence and growth of S .canadensis seedlings，mainly reflected in a significant reduction in seedling density.At67and115daysafterapplication，theseedling numberofcombination treatments wassignificantly reduced by 10.65%-28.49% compared to herbicide alone treatments，with additional suppressive effects on plant height.Theexperimental results indicated that control eficacy of chemical herbicides combined with lecithin ⋅⋅ vitamin E 3% SE on S . canadensis L. was improved.

Keywords：lecithin ⋅⋅ vitamin E 3% SE;Solidago canadensis L.;isoxafenacil ⋅⋅ glyphosate 31% OD；oxyfluorfen glyphosate 40% WP; glyphosate ⋅⋅ triclopyr 70% SP;synergism

3% 卵磷脂·维生素E悬乳剂（商品名为安融乐）是一种由南非西北大学开发的生物增效助剂，采用大豆提取技术制成，其主要成分包括卵磷脂和维生素 E[1] ，已广泛应用于除草剂的增效。（剩余11120字）