40%乙·扑乳油防除玉米田杂草试验

Weed Control in Maize with 40% Acetochlor + Prometryn EC

通过田间小区及大区对比试验的结果表明,40%乙草胺(Acetochlor)+扑草净(Prometryne)EC,对玉米田多种杂草,如稗草、马唐、狗尾草、鸭跖草、藜、铁苋菜等均有特效,防除效果稳定在90%以上.在杂草基数低于200株·m-2的地块,用药量为3000mL·hm-2,超过200株·m-2的地块,用药量为3750～4500mL·hm-2,施药时期为播种后5～9d.该除草剂对玉米安全、无药害,且不影响下茬作物生长.

Field plot comparision test showed that 40% Acetocholr + prometryne EC had good effectiveness in controlling seneral weeds in corn fields, mcluding Echinochloa crusgalli L.,Digitaria adsecendens(H.B.K) Henrard,Setaria viridis (L.) Beauv, Commelina communis L.,Chenopodium serotinum,Acalypha australis L., with control effectiveness of more than 90 percent.Dosage at 3000ml/nec is suitable for application to weed density of more than 200 per square metre,3750-4500ml for weed density of less than 200 per square metre.Effictive control of weed during all the corn growing stage can be realized through only once spring of the weed killer with treatment on soil surface in 5~9 days after sowing,with amount of water at 450 Kg per hec.It has proved that the weed killer has no harmful effect on maize and next crop.