近年来,随着播种方式的改变,三麦以套播为主的栽培模式迅速普及,1997年全市套播麦面积已占三麦总面积的95%以上。伴随而来的麦田草情发生了新的变化,尽管每年应用药剂防除,但草害仍很严重,对三麦高产影响较大。为此,我们于1993～1997年进行了套播麦田的草情调查和新药剂除... In recent years, with the change of sowing methods, the mode of cultivation of three sowing mullets has been rapidly popularized. In 1997, the sown mulching sowing area in the whole city accounted for more than 95% of the total area of ​​three mulches. Concomitant wheat field has undergone a new change in grass, despite the annual application of pesticide control, but the grass is still very serious, a greater impact on the three wheat high yield. For this reason, we carried out the interception of the wheat field in 1993 ~ 1997 and the investigation of the new medicinal herb ...