不同除草剂对甘薯田杂草的效果及安全性比较  

Efficacy and Crop Selectivity of Different Herbicides in Sweet Potato Fields

作　　者：王子文 王建平[2] 王贵启[2] 刘小民[2] 祁志尊[2] 崔海燕[2] 

机构地区：[1]河北省邯郸县农牧局,河北邯郸056000 [2]河北省农林科学院粮油作物研究所,河北石家庄050035

出　　处：《杂草科学》2015年第3期42-45,共4页Weed Science

基　　金：河北省科技支撑计划(编号:12220301D)

摘　　要：为筛选适合甘薯田高效、安全的除草剂,采用田间小区试验方法,研究了8种除草剂对甘薯田杂草的防除效果及对甘薯的安全性。结果表明,甘薯移栽后土壤处理,50%乙草胺乳油、96%精异丙甲草胺乳油、33%二甲戊灵乳油和24%乙氧氟草醚乳油对甘薯田杂草防除效果均达到80%以上,其中50%乙草胺乳油、96%精异丙甲草胺乳油对杂草的防除效果最理想,并且对甘薯产量无不良影响,适宜在甘薯移栽后土壤处理。甘薯生长期阔叶杂草2~4叶期茎叶喷雾处理,480 g/L灭草松水剂对阔叶杂草防除效果达85%以上,并且对甘薯产量无不良影响;56%2甲4氯钠可溶性粒剂、25%噻吩磺隆水分散粒剂、25%砜嘧磺隆水分散粒剂对甘薯的安全性较差,生产不宜使用。The efficacy and selectivity of eight herbicides to sweet potato were determined in field plot experiments. Soil-applied herbicides providing 80% weed control after sweet potato transplanting included acetochlor 50% EC,s- metolachlor 96% EC,pendimethalin 33% EC,and oxyfluorfen 24% EC. Among them,acetochlor 50% EC and s- metolachlor96% EC provided better control without any harmful effect to the crop,and therefore are suitable for soil treatment after transplantating of sweet potatoes. Bentazone 480 g / L AS selectively controlled more than 80% of broadleaf weeds when applied at the 2 ~ 4 leaf growth stage without crop damage. MCPA- Na 56% SG,thifensulfuon 25% WG and rimsulfuron25% WG were not selective and should not be applied to sweet potato fields.

关 键 词：甘薯田 除草剂 杂草 防效 安全性 

分 类 号：S451.2[农业科学—植物保护]