中国麻业科学2025，Vol.47Issue(4)：206-213,224,9.
喹草酮对亚麻田恶性杂草菟丝子的防控效果及安全性评价
Effectiveness and Safety Evaluation of Quinotrione on the Control of the Weed Cuscuta Chinensis in Flax Field
摘要
Abstract
In order to clarify the feasibility of the application of quinotrione on flax field,the study was conducted to systematically evaluate the safety of this agent on flax as well as its efficacy in the pre-vention and control of dodder,a weed in flax field,and its potential impact on the yield of flax.The stem and leaf spraying method was used to determine the indoor bioactivity combining with the efficacy test in the field.The results showed that:under indoor conditions,quinotrione was highly active against Cuscu-ta,with GR50 and GR90 of 11.96 g a.i./hm2 and 109.75 g a.i./hm2,respectively,which were comparable to the control agent,butralin;and GR10 was 246.39 g a.i./hm2 against flax;the selectivity coefficient of quinotrione was 2.245 against dodder,indicating that quinotrione is relatively safe for flax in the test dose range.Field test results showed that:using the quinotrione dosage of 100-200 g a.i./hm2,there is no drug damage to flax;when its dosage was 200 g a.i./hm2,30 days after the drug,the control effect on vine stem and fresh weight against dodder in flax field was 96.61%and 98.89%,which was equivalent to that of the control.And it also promoted the flax plant height,seed yield,original stem yield and other indicators.When using quinotrione to prevent and control dodder in flax fields,the dosage should be strictly controlled,and the drug should be used scientifically according to the pattern of weed occurrence,so as to prevent the occurrence of drug damage.关键词
亚麻/喹草酮/安全性/杂草防控效果Key words
flax/quinotrione/safety/weed control effect分类
农业科技引用本文复制引用
黄佳豪,易蕾,邓鹏,刘祥英,邬腊梅..喹草酮对亚麻田恶性杂草菟丝子的防控效果及安全性评价[J].中国麻业科学,2025,47(4):206-213,224,9.基金项目
现代农业产业技术体系建设专项资金(CARS-16-E19) （CARS-16-E19）
国家重点研发项目(2023YFD1400500) （2023YFD1400500）
杂草生物学与安全防控湖南省重点实验室(2015TP1016) （2015TP1016）
湖南省教育厅项目(22A0158) （22A0158）
