不同除草剂对甘薯田间杂草的防效研究

Different Herbicide on Weed Control Effect of Sweet Potato

[目的]探讨不同除草剂不同用量对除草效果的影响,为实际生产提供指导。[方法]于2011年6—11月在贵州省贵阳市金竹镇和紫云县百石岩乡进行试验。采用随机区组排列,设3次重复,9个处理,1个空白对照,田间药效采用绝对值(数测)调查法,试验数据用邓肯氏新复极差(DMRT)法进行统计分析。[结果]参试的9个处理,在贵州中部的贵阳,以处理⑥(50%乙草胺乳油3 000 mL/hm2+24%乙氧氟草醚乳油300 mL/hm2)的除草效果最好;在贵州西部紫云县,以处理③(50%乙草胺乳油3 000 mL/hm2)和处理⑨(10%精喹禾灵乳油1 500 mL/hm2)效果为最好。[结论]50%乙草胺乳油3 000 mL/hm2、10%精喹禾灵乳油1 500 mL/hm2及50%乙草胺乳油3 000 mL/hm2混合24%乙氧氟草醚乳油300 mL/hm2的除草效果较好。

Abstract ]Objective] The aim was to investigate different herbicides with different dosage on weeding effect, provide guidance for real production. [Method] The experiment was conducted in Jinzhu Town and Baishiyan rural of Guiyang City between 6--11 month in 2011, by adopting the randomized block design arrangement, repeat 3 times, 9 treatments, 1 blank control. The field effcet of the absolute value （measuring） survey method, the test data by Duncan＇s multiple range （DMRT） method statistical analysis on test data. [Resultl The herbicidal effect of treatment （6） （50% acetochlor EC 3 000 ml/hm2 ＋24% oxyfluorfen EC 300 mL/hm2） was the best in Guiyang of central Guizhou;the herbicidal effect of treatment （3）（50% acetochlor EC 3 000 mL/hm2 and treatment （9） （10% quizalofop-p-ethyl 1500 ml/hm2） was the best in Ziyun County of Western Guizhou. [Conclusion] The herhieidal effect of treatments with 50% acetochlor EC 3000 ml/hm2,10% quizalofopfop-p-ethyl 1500 ml/hm2 and 50% hectares of acetochlor EC 3 000 ml/hm2 mixed 24% oxyfluorfen EC 300 ml/hm2 were better.