引起玉米青枯病的病菌能夠長期在土壤中腐生，分別以菌絲體、卵孢子
、厚(hou)垣(yuan)孢(bao)子(zi)在(zai)植(zhi)物(wu)殘(can)體(ti)或(huo)土(tu)壤(rang)和(he)未(wei)熟(shu)肥(fei)料(liao)中(zhong)越(yue)冬(dong)。一(yi)些(xie)地(di)區(qu)連(lian)年(nian)種(zhong)植(zhi)玉(yu)米(mi)並(bing)實(shi)行(xing)秸(jie)稈(gan)還(hai)田(tian)是(shi)土(tu)壤(rang)中(zhong)的(de)病(bing)菌(jun)逐(zhu)年(nian)增(zeng)加(jia)的(de)原(yuan)因(yin)之(zhi)一(yi)，提(ti)高(gao)種(zhong)植(zhi)密(mi)度(du)也(ye)為(wei)病(bing)菌(jun)提(ti)供(gong)了(le)有(you)利(li)侵(qin)染(ran)的(de)小(xiao)氣(qi)候(hou)。

防治玉米青枯病要注意以下幾點：xuanyuhezhongzhikangbingpinzhong。woguoyijingjiangkangqingkubinglieweiyumiyuzhongmubiao。keyizaibutongdiquxuanyongbutongdezijiaoxihekangxingpinzhong。shouhuohoujishiqingchuyumijiegan，huogaowenduizhiyoujifei，huojizhongchuli。jinkenengyushucaizuowulunzuo。zhuyipaishuifanglao
，helimizhi，zengshixinfeiyitigaoyumishengchangshihekangbingnengli。zengshiyoujifeihejunfei，yongshengfangjunbanzhong，yonggejunjing（適樂時）或立克秀包衣種子或拌種處理。