李慧峰++黃詠梅++李彥青++吳翠榮++滑金鋒++陳天淵
摘要 選用96%金都爾乳油、90%禾耐斯乳油、33%施田補乳油和25%寶成水分散粒劑4種不同除草劑進行了防效比較試驗以及對甘薯的影響研究。結果表明:噴施96%金都爾乳油1 200 mL/hm2雜草防除效果最優,總株防效和鮮重防效均達到了87%以上,且藤蔓鮮重和鮮薯產量均比空白對照增產,增產幅度分別達到了54.02%和29.32%,干物率和商品率與對照差異不顯著。從雜草防效及對甘薯地上部藤蔓、鮮薯產量、干物率和商品率的影響綜合考慮,使用96%金都爾乳油1 200 mL/hm2在甘薯田雜草防除效果最好。
關鍵詞 甘薯;除草劑;防效;產量
中圖分類號 S531 文獻標識碼 A 文章編號 1007-5739(2015)17-0139-02
Control Effect of Different Herbicides on Weeds in Sweet Potato Field
LI Hui-feng HUANG Yong-mei LI Yan-qing WU Cui-rong HUA Jin-feng CHEN Tian-yuan *
(Maize Research Institute,Guangxi Academy of Agricultural Sciences,Nanning Guangxi 530007)
Abstract An experiment was carried out to compare the weed control efficacy and effect on sweet potato,by using four kinds of herbicides of 96% s-metolachlor EC,90% acetochlor EC,33% pendimethalin,25% rimsulfuron DF in sweet potato fields.The best herbicide was 96% s-metolachlor EC 1 200 mL/hm2,which the total control efficacy for each plant and blank control effect on fresh weight reached respectively more than 87%.Compared with the CK,the yields of fresh vines and fresh root of 96% s-metolachlor EC 1 200 mL/hm2 increased respectively more than 54.02% and 29.32%.Then there were no significant differences with CK on the dry matter content and commodity rate.Considering the comprehensive factors of weed control effects,aboveground vines,fresh root yield,dry matter content and commodity rate,the optimum weeds control method for sweet potato field was using 96% s-metolachlor EC 1 200 mL/hm2.
Key words sweet potato;herbicide;control effect;yield
在農田生產中,田間雜草對于生產者來說是一項長期的困擾。田間雜草不僅與甘薯競爭光、水、肥等資源,而且為病害蔓延提供了適宜環境。在甘薯生產中,雜草對甘薯的優質高效生產影響嚴重。每年因雜草引起減產5%~15%,嚴重的地塊,減產50%以上[1]。施用除草劑防除雜草是當前農田管理中一種行之有效的方法,它不僅能夠有效防除雜草,而且還能提高生產效率。但目前市場上除草劑種類眾多,防除雜草效果不一。因此,了解不同類型除草劑對甘薯田間雜草的防除效果,可為雜草防除和生產效率提高提供參考依據。目前,國內關于除草劑對甘薯田間雜草防效研究較多[2-7],但針對廣西薯區甘薯田除草劑的研究報道較少。本文采用4種不同類型的除草劑,通過對比分析雜草防效及對甘薯藤蔓、薯塊和產量的影響,以期為甘薯田間雜草防除工作提供參考。……