稻烟轮作区二氯喹啉酸替代除草剂品种的筛选  

Screening of the Alternative Agents of Rice Paddy Herbicide Quinclorac in Rice and Tobacco Rotation System

作　　者：董丽红[1] 张功营[1] 周星洋 杨恩兰[1] 钟秋瓒[1,2] 蔡灵娟[1] 杨华[1] 万树青[1] 

机构地区：[1]华南农业大学农药与化学生物学教育部重点实验室,广州510642 [2]赣州市烟草科学研究所,江西赣州341000

出　　处：《农药》2016年第4期292-296,共5页Agrochemicals

基　　金：中国烟草总公司广东和江西公司科技项目(粤烟科[2011]28号;赣烟科[2011]98号)

摘　　要：[目的]通过比较8种除草剂对烟株生长的影响,筛选出除草剂二氯喹啉酸的替代品种。[方法]利用盆栽技术,将50%二氯喹啉酸WP、60%丁草胺EC、50%乙草胺EC、25 g/L五氟磺草胺OD、35%苄·丁WP、53%苄嘧·苯噻酰WP、30%苄·二氯WP、330 g/L二甲戊灵EC 8种稻田除草剂均按照最大推荐剂量、最大推荐剂量的50%、25%、10%、5%、1%、清水对照7个处理进行拌土施药处理,并测定其对烟草生长的影响。[结果]所有供试除草剂对烟株的生长抑制作用均小于二氯喹啉酸,其中25 g/L五氟磺草胺OD、53%苄嘧·苯噻酰WP、35%苄·丁WP、30%苄·二氯WP、330 g/L二甲戊灵EC对烟草的药害临界值分别为8.00×10-3、7.50×10-2、2.23、2.55×10-2、5.60×10-3mg a.i./kg。[结论]该5种除草剂将可作为稻烟轮作区二氯喹啉酸的替代品种。[Aims] This study aims to screen out the alternative agents of quinclorac through comparison of the effects of eight herbicides on the growth of tobacco. [Methods] Eight kinds of herbicides quinclorac 50% WP, butachlor 60% EC, acetochlor 50% EC, penoxsulam 25 g/L OD, bensulfuronmethyl-butachlor 35% WP, bensulfuron-methyl-mefenacet 53% WP, bensulfuron-methyl-quinclorac 30% WP and pendimethalin 330 g/L EC chosen as alternative agents were used in the soil at maximum recommended dose, 50, 25, 10, 5, 1% of maximum recommended dose and water（control） in pot experiment and the growth of tobacco was investigated. [Results] The results showed that the inhibitory effect of the selected herbicide on tobacco were smaller than quinclorac at the same concentration dose. The critical concentration causing tobacco phytotoxicity of bensulfuron methyl-quinclorac 30% WP, bensulfuron methyl-mefenacet 53% WP, bensulfuron methyl-butachlor 35% WP, penoxsulam 25 g/L OD and pendimethalin 330 g/L EC were 8.00×10^（-3）, 7.50×10^（-2）, 2.23, 2.55×10^（-2）, 5.60×10^（-3） mg a.i./kg respectively. [Conclusions] The five herbicides can be suitable to be used as alternative agents in rice and tobacco rotation system.

关 键 词：二氯喹啉酸 稻烟轮作 替代品种 

分 类 号：S482.4[农业科学—农药学]