邢台市常年玉米种植面积24万hm2,其中免耕玉米种植面积占95%。随着玉米免耕播种技术的推广普及,玉米苗期杂草发生逐年加重,既有麦收时遗留下来的杂草,又有与玉米同时出土的杂草。杂草发育参差不齐,形成庞大的群落。加之免耕种植玉米前后,正值高温、多雨的农忙季节,杂草生长迅速 Xingtai perennial corn acreage 240,000 hm2, of which no-tillage corn acreage accounted for 95%. With the popularization of no-till sowing technology of maize, the occurrence of weeds in maize seedling has been increasing year by year, including weeds left over from wheat harvest and weeds unearthed from corn. Weeds uneven development, the formation of a large community. Coupled with the no-till corn planting, positive hot, rainy agricultural season, weeds grow rapidly