摘要
【背景】薇甘菊是最具危害性的世界性杂草之一,目前已入侵我国香港、广东、海南、台湾、云南等地,而嘧磺隆是防治薇甘菊的一种高效药剂。【方法】采用室内生物测定和田间喷雾法,研究了商用药剂嘧磺隆与洗衣粉或柴油混合使用,对薇甘菊根、茎、叶片的杀灭效果及对后期残留茎干萌发率和种子萌芽率的抑制作用。【结果】嘧磺隆单独处理28d后,薇甘菊叶片、茎和根的死亡率分别为86%、92%和84%;而与洗衣粉混合处理后,死亡率分别升高至98.33%、97.67%和89.67%;与柴油混合使用后,死亡率分别升高至92.33%、95.33%和98.33%。经嘧磺隆单独处理后的薇甘菊后期茎干萌发率为9.67%;与洗衣粉、柴油混合使用后,萌发率分别降低至6%、5.33%。经嘧磺隆单独处理后,薇甘菊种子的萌芽率为44.67%;而与洗衣粉、柴油混合使用后,种子萌芽率分别降至28.67%、25.33%。【结论与意义】嘧磺隆与洗衣粉或柴油混合使用,对薇甘菊组织的杀灭效果及对后期茎干萌发率和种子萌芽率的抑制作用均优于嘧磺隆单独使用。本研究可以为薇甘菊的防控技术开发提供参考。
[ Background ] Mikania micrantha H. B. K. is one of the most dangerous weeds worldwide, and has invaded Taiwan, Hongkong, as well as Guangdong, Hainan, and Yunnan Provinces of China where it causes serious damages. Sulfometuron methyl is an efficient herbicide against M. micrantha control, and we sought methods to enhance its effect by mixing the herbicide with differ- ent surfactants. [ Method ] By the methods of field spraying and laboratory bioassay, we tested the control effects of sulfometuron methyl mixed with detergent or diesel on root, steam and leaf tissues of M. micrantha. We also studied the effect on germination rate of residual stems and seeds. [ Result]Twenty-eight days after treatment by sulfometuron methyl alone, the mortality of leaf, steam and root were 86% , 92% and 84% respectively. The same mortality values were 98.33%, 97.67% and 89.67% after mixed with detergent and 92.33% , 95.33% and 98.33% when mixed with diesel oil, respectively. The re-sprouting rate of residual stems trea- ted by sulfometuron methyl alone was 9.67%, and this was reduced to 6% and 5.33% after mixing with detergent and diesel oil, respectively. Seed germination rate was 44.67% when treated with sulfometuron methyl alone, and it was decreased to 28.67% and 25.33% after mixed with detergent and diesel, respectively. [ Conclusion and significance ] Sulfometuron methyl had bigger effect when mixed with detergent or diesel on plant tissues, germination rate of residual steam and seeds than when used alone. The results will provide reference for M. micrantha control.
出处
《生物安全学报》
2012年第3期240-243,共4页
Journal of biosafety
基金
海南省科学事业费项目(11-20409-0009)
