<div><br></div><div><section class="_135editor" data-role="paragraph" style="font-size: medium; max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><span style="max-inline-size: 100%; margin: 0px; padding: 0px; cursor: text; font-size: 15px; overflow-wrap: break-word !important; outline: none 0px !important;">&nbsp; &nbsp; 在棉田发生危害的主要是小地老虎（A g rotis yp silonRottemberg）和黄地老虎（A g rotissegetumSchiffermuller）两种，属鳞翅目，夜蛾科。年发生３～４代，第一代主要危害棉花。初孵幼虫取食棉苗嫩叶或啃食叶肉；大龄幼虫可咬断棉苗基部嫩茎形成无头棉，危害严重时，可造成棉田缺苗断垄。防治措施有４点。①农艺措施：播种前清除棉田内外杂草，播种后注意中耕锄地，以消灭虫卵。②施药防治幼虫：低龄幼虫期，棉花定苗前新被害株达１０％，定苗后新被害株达５％时，可用菊酯类农药１０００～２０００倍、５０％辛硫磷１０００倍液，喷洒棉苗。高龄幼虫期，可用９０％敌百虫０畅５千克加水５千克稀释后喷拌在５０千克麦麸或炒香的棉饼粉中，傍晚顺垄撒施在棉苗周围进行防治。③人工捕杀幼虫：幼虫期间于傍晚将泡桐树叶摆放棉株旁，翌日清晨翻开树叶人工捕捉幼虫。</span></p></section><section class="_135editor" data-role="paragraph" id="autoparagraph" style="font-size: medium; max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br style="max-inline-size: 100%; margin: 0px; padding: 0px; font-family: 微软雅黑, &quot;Microsoft YaHei&quot;, sans-serif; font-size: 17px; caret-color: rgb(255, 0, 0); overflow-wrap: break-word !important; outline: none 0px !important;"></p></section></div>