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id="f39q2hj" class="layui-breadcrumb"> <a href="/index.html" class="icon-home"> 首頁(yè)</a><a href="/article/lych.html">林業(yè)蟲(chóng)害</a><a href="/article/chfz.html">蟲(chóng)害防治</a> </span> </div> <div class="jefljuk" id="main-con">  <link rel="stylesheet" type="text/css" href="/static/common/css/common.css">  <h1 class="text-center text-large">美國白蛾防治</h1> <h5 class="text-center text-small">文章出處：本站人氣：17301 發(fā)表時(shí)間：2022-09-01 14:11:21</h5> <hr> <div id="npebh3q" class="proinfo"> <p style="text-align:center;text-indent:2em;"> <span style="font-size:16px;">美國白蛾防治</span> </p> <p style="text-align:center;"> <img src="http://m.realms-markets.com/editor/../uploads/image/20220901/20220901141435_28449.jpg" alt="" /> </p> <p style="text-indent:2em;"> <span style="font-size:14px;"><strong>一、美國白蛾簡(jiǎn)介</strong></span> </p> <p style="text-indent:2em;"> 美國白蛾是世界性檢疫害蟲(chóng)，為我國重要林業(yè)植物檢疫對象。美國白蛾為鱗翅目燈蛾科白蛾屬害蟲(chóng)，又名美國燈蛾、秋幕蛾、網(wǎng)幕毛蟲(chóng)等。美國白蛾起源于北美，1979年在我國首次被發(fā)現，其幼蟲(chóng)主要為害的植物有法桐、柳樹(shù)、海棠、紫葉李、白蠟、金銀木、榆樹(shù)、桃樹(shù)等300多種。 </p> <p style="text-indent:2em;"> <span style="font-size:14px;"><strong>二、美國白蛾的生活史及發(fā)生規律</strong></span> </p> <p style="text-indent:2em;"> 美國白蛾繁殖量大，適應性強，1頭雌蛾1次產(chǎn)卵800-2000粒。幼蟲(chóng)耐饑餓能力極強，15天不取食都可再次正常繁殖危害。其吃食豐富對生態(tài)的要求低，因此其危害范圍十分廣泛。 </p> <p style="text-indent:2em;"> 2006年9月份首次在商河縣被發(fā)現，由此美國白蛾正式入侵濟南。美國白蛾一年可繁衍2-3代。以蛹發(fā)展，主要在磚石、窗臺、草堆、樹(shù)洞等越冬，在4月份左右，美國白蛾逐漸羽化，這個(gè)過(guò)程會(huì )一直持續到5月份，5月份的白蛾羽化個(gè)數最多，是美國白蛾羽化的巔峰，越冬后的美國白蛾便開(kāi)始產(chǎn)卵，4-5月份第一批幼蟲(chóng)便會(huì )出現，6月中旬成熟的美國白蛾便開(kāi)始化蛹，而6月下旬第一批又重新開(kāi)始逐漸羽化，就在這樣的循環(huán)往復之間，7月份第二批幼蟲(chóng)開(kāi)始出生，第二代成熟的美國白蛾逐漸化蛹，到8月份下旬第三代幼蟲(chóng)開(kāi)始出生，越冬的幼蟲(chóng)也開(kāi)始出現。自此，美國白蛾第三代已經(jīng)產(chǎn)生完畢，開(kāi)始逐漸尋找隱蔽的場(chǎng)所越冬，大約在11月份時(shí)尋找完畢。 </p> <p style="text-indent:2em;"> <span style="font-size:14px;"><strong>三、美國白蛾的危害特點(diǎn)及傳播途徑</strong></span> </p> <p style="text-indent:2em;"> 美國白蛾可為害林木、果樹(shù)、花卉、農作物和蔬菜等在內的300多種植物，在園林上，主要危害法桐、刺槐、桑樹(shù)、臭椿、榆樹(shù)、柳樹(shù)、紫葉李、白蠟樹(shù)、桃樹(shù)等多種植物，嚴重時(shí)可將整片森林樹(shù)葉吃光，嚴重影響樹(shù)木生長(cháng)及城市景觀(guān)。 </p> <p style="text-indent:2em;"> 美國白蛾1-2齡幼吐絲綴葉1-3片，在葉背面食葉肉，葉片形成透明的上表皮。3-4齡幼蟲(chóng)將葉片咬成缺刻，只留葉脈，并不斷把新葉包進(jìn)網(wǎng)幕蟲(chóng)，使網(wǎng)幕迅速逐漸擴大，4齡時(shí)幼蟲(chóng)將網(wǎng)幕連綿在一起。5齡以后分散為單個(gè)個(gè)體取食，并進(jìn)入暴食期，僅留葉片主脈和葉柄。幼蟲(chóng)在網(wǎng)幕中的生活時(shí)間約占整個(gè)幼蟲(chóng)期的60%，5-7齡幼蟲(chóng)取食量占總取食量的90%以上。 </p> <p style="text-indent:2em;"> 美國白蛾的傳播途徑：成蟲(chóng)飛翔尋找寄主產(chǎn)卵，老熟幼蟲(chóng)爬行尋找化蛹場(chǎng)所，近距離傳播，其遠距離傳播主要是通過(guò)交通工具運輸貨物來(lái)完成。 </p> <p style="text-indent:2em;"> <span style="font-size:14px;"><strong>四、美國白蛾的防治</strong></span> </p> <p style="text-indent:2em;"> 美國白蛾主要懸鈴木、臭椿、櫻花、桑、楊、糖槭等植物。美國白蛾2代幼蟲(chóng)最為嚴重，部分樹(shù)的樹(shù)葉被全部吃光，有的甚至死亡。 </p> <p style="text-indent:2em;"> 根據我國的植保方針“預防為主、綜合防治”，因此從蟲(chóng)情的預測預報，加強植物檢疫，到采用物理、生物、化學(xué)綜合防治措施，有效地控制美國白蛾的為害。 </p> <p style="text-indent:2em;"> （1）物理防治： </p> <p style="text-indent:2em;"> 美國白蛾成蟲(chóng)具有較強的趨光性，在羽化期可采用燈光誘殺、配合性引誘劑誘殺效果更好，初孵化幼蟲(chóng)有吐絲結網(wǎng)群集為害的特性，可通過(guò)調查及時(shí)清除網(wǎng)幕和被害枝條，達到除治效果。在老熟幼蟲(chóng)下樹(shù)化蛹期可采用稻草綁縛樹(shù)干，引誘老熟幼蟲(chóng)化蛹，于羽化前解下稻草燒毀以消滅蟲(chóng)源。對下地幼蟲(chóng)及時(shí)捕殺，防止其化蛹越冬導致蟲(chóng)害的蔓延。 </p> <p style="text-indent:2em;"> 優(yōu)點(diǎn)是對環(huán)境無(wú)污染，具有較好的生態(tài)效益，缺點(diǎn)是殺蟲(chóng)效率較化學(xué)防治低，且不能選擇害蟲(chóng)或益蟲(chóng)。 </p> <p style="text-indent:2em;"> （2）生物防治： </p> <p style="text-indent:2em;"> 在生物防治上，美國白蛾寄生性天敵：周氏嚙小蜂已經(jīng)成為生物防治美國白蛾的最好手段。我國對周氏嚙小蜂的研究處于世界領(lǐng) 先水平，在無(wú)風(fēng)或微風(fēng)的晴天，10:00-17:00時(shí)進(jìn)行放風(fēng)，周氏嚙小蜂的釋放量為每頭美國白蛾幼蟲(chóng)釋放3-5頭蜂。 </p> <p style="text-indent:2em;"> 優(yōu)點(diǎn)是對環(huán)境無(wú)污染，具有較好的生態(tài)效益，缺點(diǎn)是工程量大，防治周期長(cháng)，效率低。 </p> <p style="text-indent:2em;"> （3）化學(xué)防治： </p> <p style="text-indent:2em;"> 藥劑防治主要集中在美國白蛾幼蟲(chóng)期進(jìn)行，尤其是1-3齡低齡幼蟲(chóng)時(shí)期?？梢酝ㄟ^(guò)以下方案進(jìn)行防治： </p> <p style="text-indent:2em;"> 1. 森活巧功500-750倍+綠福茵1500倍葉片噴霧。 </p> <p style="text-indent:2em;"> 2. 森活肅刃750-1000倍+綠福茵1500倍葉片噴霧。 </p> <p style="text-indent:2em;"> <br /> </p> <p style="text-indent:2em;"> <br /> </p></div> </br>  <div id="4nq4oxl" class="poofen"> <ul class="layui-row layui-col-space10"> <li id="pkbwuif" class="layui-col-lg6 layui-col-xs12 text-more"> 上一篇： <a href="/art/chfz-384.html">松材線(xiàn)蟲(chóng)病防治</a> </li> <li id="lfmh9wk" class="layui-col-lg6 layui-col-xs12 text-more"> 下一篇：暫時(shí)沒(méi)有數據 </li> <div id="9nazd4j" class="layui-clear"></div> </ul> </div> <div id="3xjqprp" class="layui-clear"></div> <div id="snrr50n" class="margin-top"> <b>標簽：</b> <a>工廠(chǎng)除蚊蟲(chóng)服務(wù)</a> <a>工廠(chǎng)除蚊蟲(chóng)服務(wù)</a> <a>工廠(chǎng)除蚊蟲(chóng)服務(wù)公司</a> </div>   <div id="zd3jqep" class="poofen"><b>最新文章</b></div> <ul class="layui-row layui-col-space15 margin-top"> <li id="afwuynk" 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