4种药剂防治压砂西瓜田一年生杂草田间药效试验

Herbicide Efficacy Against Weeds Growing in a Gravel- mulched Watermelon Field

采用田间小区试验方法进行4种药剂防除压砂西瓜田杂草田间药效试验。结果表明:50%敌草胺乳油1 125 g a.i./hm2、72%异丙甲草胺乳油756 g a.i./hm2可有效防除压砂西瓜田的小画眉草、地锦草、狗尾草、小藜、虎尾草等。

The efficacy of four herbicides to control weeds in gravel-mulched watermelon field was evaluated.Only two herbicides Napropamide （50％ EC,1125 g a.i./hm2） and metolachlor （72％ EC,756 g a.i./hm2） demonstrated good control for Eragrostis poaeoides Beauv.,Euphorbia humifusa Willd.,Setaria viridis （L） Beauv.,Chenopodium serotinum L.,and Chloris virgata Swartz.