yumihuibanbingshiyumishangfabingzuipubiandeyepianbinghai,zhongbingshiyepiandabubianhuangkujiao,guosuixiachui,zilisongtuoganbie,bailizhongxiajiang,yanzhongyingxiangchanlianghepinzhi。為防治玉米灰斑病的侵害,本著預防為主,綜合防治的理念。提出以下防治方法:
1、選種抗病品種是最重要的防病措施。
2、收獲後及時清除田間病殘體,實行大麵積深翻、輪作,加強田間管理,雨後及時排水、降低田間濕度是必不可少的預防性農業措施。
3、合理澆水施肥,促使健狀生長,提高玉米的抗病能力。
4、藥劑防治:在玉米開花授粉後或發病初期,主要在玉米大喇叭期、抽雄穗期和灌漿初期等3geguanjianshiqijinxingyaojifangzhi,zaipenyaoshizuihaoxiancongyumixiabuyepianxiangshangbuyepianpenshi,yimeigeyepianpenshiweizhun。yinweiyumihuibanbingshixiancongmeizhuyumidejiaoyeyouxiawangshangfashengweihaihemanyan,zaoqixianpenjiaoyeqimudejiushikongzhixiabuyepianshangdebingyuanjunbuyaowangxiapa,yidadaokongzhibinghai。yaojixuanyongshangkeyong80%代森錳鋅粉劑500倍液噴霧;70%代森鋅粉劑800倍液噴霧;50%福美雙粉劑500倍液噴霧;25%丙環唑1500倍液噴霧;25%戊唑醇1500倍液噴霧;50%或80%多菌靈800倍液噴霧;50%甲基托布津500倍液噴霧。
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