农药学学报2018，Vol.20Issue(1)：18-24,7.DOI:10.16801/j.issn.1008-7303.2018.0013
双环磺草酮除草活性及对水稻的安全性研究
Herbicidal activity evaluation of benzobicyclon and its safety to rice
摘要
Abstract
Benzobicyclon, which targets the 4-hydroxyphenylpyruvate dioxygenase (HPPD), is a bicyclooctane herbicide. In order to explore its application in rice fields of China, the weed controlling spectrum, herbicidal activity, and safety of benzobicyclon to rice were investigated under greenhouse conditions. The results showed that the aboveground fresh weight reduction of common weeds in rice field, includingEchinochloa crusgalli,Monochoria korsakowii andCyperus difformis,were all above 90％ at active ingredient of 360 g/hm2. The GR50 value of benzobicyclon against main autumn weeds were 48-196 g/hm2. The biological activity of benzobicyclon was higher than that of mesotrione except in the case ofAeschynomene indica. The safety of 8 rice varieties to benzobicyclon was studied. At therate of 720 g/hm2, the tolerance of Longliangyouhuazhan, Wankennuo 1, Wandao 68 and Lvhanjing 1 to benzobicyclon were good. However, the plant height and fresh weight of Huiliangyou 882, C liangyou 608, Wandao 119 and Y liangyou 1 were inhibited in different degree. Selectivity index of benzobicyclon between Longliangyouhuazhan, Wankennuo 1, Wandao 68, Lvhanjing 1 and three weeds were 3.66-4.37, 4.50-5.37, 3.36-4.01 and 3.29-3.93, respectively, which was much higher than that of mesotrione. In conclusion, benzobicyclon had good herbicidal effect against autumn weeds, and it is safe to 3 japonica varieties mentioned above and Longliangyouhuazhan of 5 indica varieties.关键词
双环磺草酮/杀草谱/除草活性/水稻/安全性Key words
benzobicyclon/weed control spectrum/herbicidal activities/rice/safety分类
农业科技引用本文复制引用
毕亚玲,王曹阳,谷刚,李部,任永娟,李学维,李淑娟..双环磺草酮除草活性及对水稻的安全性研究[J].农药学学报,2018,20(1):18-24,7.基金项目
国家自然科学基金(31201529) （31201529）
安徽省高校优秀中青年骨干人才国内外访学研修重点项目 (gxfxZD2016183) （gxfxZD2016183）
安徽省教育厅自然科学重点项目 (KJ2017A511) （KJ2017A511）
安徽科技学院植物保护重点学科 (AKZDXK2015C04). （AKZDXK2015C04）
