5种除草剂对甘薯田间杂草的防除效果

Control Efficacy of Five Herbicides on Sweetpotato Field Weeds

为了筛选适合甘薯田使用的高效、安全除草剂,比较了50%乙草胺乳油、33%二甲戊乐灵乳油、50%扑草净可湿性粉剂、24%乙氧氟草醚乳油和10%精喹禾灵乳油5种除草剂对甘薯田杂草的防除效果。结果表明,乙草胺、二甲戊乐灵和乙氧氟草醚对甘薯田杂草的防除效果较好,二甲戊乐灵、乙氧氟草醚和精喹禾灵对甘薯较为安全,而33%二甲戊乐灵乳油1 500mL/hm2处理获得了最高的鲜薯产量26 548.27kg/hm2。从杂草防除效果及对甘薯安全性和鲜薯产量的影响等综合因素考虑,使用33%二甲戊乐灵乳油1 500mL/hm2在甘薯田防除杂草效果最好。

In order to select herbicides both highly effective and safe for sweetpotato fields,an ex- periment was carried out to compare the weed control efficacy of five herbicides of 50 % acetochlor EC,33% pendimethalin EC, 50% prometryne WP, 24% oxyfluorfen EC and 10% quizalofop- pethyl EC in sweetpotato fields. The results showed that acetochlor, pendimethalin and oxyfluor- fen had good control effects on weeds, pendimethalin, oxyfluorfen and quizalofop-p-ethyl had good safety to sweetpotato,and the treatment of 33%pendimethalin EC with 1 500 mL/ha obtained the highest fresh root yield of 26 548.27 kg/ha. Considering the comprehensive factors of weed con- trol effect as well as the safety and fresh root yield,33% pendimethalin EC with 1 500 mL/ha was recommended to use in sweetpotato fields for control of weeds.