幸运快艇

  • <tr id='XcGSNH'><strong id='XcGSNH'></strong><small id='XcGSNH'></small><button id='XcGSNH'></button><li id='XcGSNH'><noscript id='XcGSNH'><big id='XcGSNH'></big><dt id='XcGSNH'></dt></noscript></li></tr><ol id='XcGSNH'><option id='XcGSNH'><table id='XcGSNH'><blockquote id='XcGSNH'><tbody id='XcGSNH'></tbody></blockquote></table></option></ol><u id='XcGSNH'></u><kbd id='XcGSNH'><kbd id='XcGSNH'></kbd></kbd>

    <code id='XcGSNH'><strong id='XcGSNH'></strong></code>

    <fieldset id='XcGSNH'></fieldset>
          <span id='XcGSNH'></span>

              <ins id='XcGSNH'></ins>
              <acronym id='XcGSNH'><em id='XcGSNH'></em><td id='XcGSNH'><div id='XcGSNH'></div></td></acronym><address id='XcGSNH'><big id='XcGSNH'><big id='XcGSNH'></big><legend id='XcGSNH'></legend></big></address>

              <i id='XcGSNH'><div id='XcGSNH'><ins id='XcGSNH'></ins></div></i>
              <i id='XcGSNH'></i>
            1. <dl id='XcGSNH'></dl>
              1. <blockquote id='XcGSNH'><q id='XcGSNH'><noscript id='XcGSNH'></noscript><dt id='XcGSNH'></dt></q></blockquote><noframes id='XcGSNH'><i id='XcGSNH'></i>
                草地螟防控技术
                2019-11-1311时52分浏览次数:

                  草地螟属间歇ξ 性暴发、迁飞性、杂食性¤害虫。本地实际易可操作方案: 1.中耕→除草灭卵技术。对草地螟非喜食作物如禾本科作物和马铃」薯等,于产∑ 卵前除净田间杂草。对于草地螟♀喜食性作物如麻类、豆类、向日葵等,于产卵盛期结合中耕除草灭卵,将除掉的杂草带出田外沤肥或集〖中处理。要注意清除藜科和蓼科等杂草,同时要注意清除田边地埂和夹荒地的杂草,以免幼虫迁入农田危害。在幼虫已孵化的田块,要先打药,后除草,避免幼虫集中向ぷ农作物转移为害。 2.药剂防治技术。3龄幼虫前(卵始盛期后10天左右)选用苦参碱、高效氯氰菊酯等药剂喷雾防治。严重发生区采♀取药带隔离和应急防治集中歼灭,及时挑治幼虫分布不均匀的地块,注意对田边、地头、撂荒地幼虫〓的防治。

                Produced By 大汉网络 大汉版通发布系统