基于正交设计棉田龙葵的化学防除研究  

Chemical control of cotton field Solanum nigrum L. based on Orthogonal Design

作　　者：李文杰[1] 钟亮[1] 崔家丽 王巧丽[1] 王俊刚[1] 

机构地区：[1]石河子大学农学院,新疆石河子832003

出　　处：《石河子大学学报（自然科学版）》2017年第1期70-74,共5页Journal of Shihezi University(Natural Science)

基　　金：新疆兵团博士基金项目(2013BB004);国家自然科学基金项目(31260435)

摘　　要：为了筛选防除棉田杂草龙葵的理想药剂,本研究采用正交设计试验选择5种除草剂对龙葵进行了室内药效试验。结果表明:乙氧氟草醚、精异丙甲草胺起主导作用,药后15 d处理7(120 g/hm^224%乙氧氟草醚EC+150g/hm^250%扑草净SC+1875 g/hm^2330g/L二甲戊灵EC+665 g/hm^2960g/L精异丙甲草胺EC)、处理8(120 g/hm^224%乙氧氟草醚EC+1125 g/hm^250%扑草净SC+1875 g/hm^2330g/L二甲戊灵EC+1500 g/hm^238%莠去津SC)、处理9(150 g/hm^224%乙氧氟草EC+1875 g/hm^2330g/L二甲戊灵EC+2250 g/hm^238%莠去津SC+665 g/hm^2960 g/L精异丙甲草胺EC)、处理12(150 g/hm^224%乙氧氟草醚EC+1125 g/hm^250%扑草净SC+1500 g/hm^2330g/L二甲戊灵EC+833 g/hm^2960 g/L精异丙甲草胺EC)的防效均达到90%以上。药后15 d时,龙葵整株干枯、根部停滞生长地上部分基本无返青现象。因此,处理7、处理8、处理9、处理12为较优的组合,在龙葵的防治时,可从中选择适当的除草剂浓度及混配组合。In order to screen effective herbicides against cotton field Solanum nigrum L.,we carried out field orthogonal experiments with five stem and leaf herbicides.The result indicated that there were differences on the effect of these herbicides to Solanum nigrum L.The order of the primary and secondary factors for herbicides were about oxyfluorfen,s-metolachlor EC,Pendimethalin EC,atrazine SC and promentryn SC.It found that oxyfluorfen and s-metolachlor played a leading role in controlling S.nigrum L.15 days after herbicides application,the control effect reached more than 90% of the drug combinations were treatment 7（120 g/hm-224% oxyfluorfen EC＋150 g/hm-250% promentryn SC＋1875 g/hm-2330 g/L Pendimethalin EC＋ 665 g/hm-2960 g/L s-metolachlor EC）,treatment 9（150 g/hm-224% oxyfluorfen EC＋1875 g/hm-2330 g/L Pendimethalin EC＋ 2250 g/hm-238% atrazine SC＋665 g/hm-2960g/L s-metolachlor EC）,treatment 8（120 g/hm-224% oxyfluorfen EC＋1125g/hm-250% promentryn SC＋1875 g/hm-2330 g/L Pendimethalin EC＋1500 g/hm-238% atrazine SC） and treatment 12（150g/hm-224% oxyfluorfen EC＋1125 g/hm-250% promentryn SC＋1500 g/hm-2330 g/L Pendimethalin EC＋833 g/hm-2960 g/L s-metolachlor EC）,respectively,so they were the best combinations.The Solanum nigrum L.plants under these herbicides applications would stop growing,wither and never turn green.

关 键 词：龙葵 除草剂 防治效果 

分 类 号：S482.4[农业科学—农药学]