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金沙县位于贵州省西北部,毕节地区东部,地处黔中丘原向黔西北高原过渡地带,耕地面积34200hm2,玉米常年种植面积18000hm2。近年来,由于劳动力严重缺乏,加上耕作粗放,导致玉米田杂草覆盖度大,给玉米生产造成了较大危害。笔者于2009年5月～2010年8月期间,对清池镇、沙土镇、禹谟镇、平坝乡、石场乡、安洛乡等地对136块玉米田(面积约22 hm2)中的杂草种类进行了调查,总结了杂草发生的特点与危害,并针对杂草危害提出具体的防除措施。
Jinsha County is located in the northwest of Guizhou Province, east of Bijie Prefecture, located in the transition zone from the Central Guizhou Qiuyuan to the northwestern Guizhou Plateau, 34200hm2 of cultivated land and 18000hm2 of corn. In recent years, due to a serious shortage of labor force, coupled with extensive farming, resulting in corn field weed coverage, causing greater harm to corn production. The author from May 2009 to August 2010 period, Qingchi Town, Sha Town, Yu Mo Town, Pingba Township, Anluo Township and other places on 136 fields (area of about 22 hm2) Of the weed species were investigated, summed up the characteristics and hazards of weeds occurred, and put forward specific control measures against weed hazards.