<br><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;">　　棉叶螨又叫棉花红蜘蛛，俗称火龙，属蛛形纲，蜱螨目，叶螨科。在我国主要有朱砂叶螨（Tetran ychuscinnabari唱nusBoisduval）、截形叶螨（Tetran ychustruncatusEhara）、二斑叶螨（Tetran ychusurticaeKoch）和土耳其斯坦叶螨（Tetran ychusturkestaniUgarovetNikolshi）４种，山东主要是朱砂叶螨和截形叶螨。</span></p><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; overflow-wrap: break-word !important; outline: none 0px !important;"></p><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;">　　叶螨是我国棉花的主要害虫之一，从苗期到花铃期都能危害棉花。种植转基因抗虫棉后，由于防治棉铃虫用药次数减少，棉叶螨得不到及时有效的兼治，致使在抗虫棉田内的发生危害呈加重趋势，成为抗虫棉田的常发主要害虫之一。棉花受害严重时，全株叶片变红、枯焦脱落，并引起蕾铃大量脱落，造成减产和品质下降，必须及时严格防治。</span></p><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; overflow-wrap: break-word !important; outline: none 0px !important;"></p><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;">　　主要防治措施如下：①农艺措施。棉田实行冬耕生长季节及时中耕除草，特别应注意清除田边地头的杂草，消灭棉田内外虫源。②药剂处理棉种。未经脱绒包衣的棉种，可用５％甲拌磷颗粒剂或１５％铁灭克颗粒剂或７０％快胜可湿性粉剂处理棉种。③喷药防治。从５月下旬开始，在棉田内对角线５点取样，每点２０株，每３～５天调查一次棉花受害株数，当受害棉叶黄白斑株率达２０％～２５％时，应立即喷药防治。在棉叶螨发生的棉田对棉蚜和棉铃虫防治时，要注意使用对棉叶螨有兼治效果的农药，切忌使用杀灭菊酯农药，因为杀灭菊酯对棉叶螨有刺激扩群作用。在选用药剂防治棉叶螨时，可使用２％联苯·阿维微乳剂每亩３５毫升、７３％丙炔螨特乳油每亩４５毫升、１５％哒螨灵乳油每亩１５毫升对水喷雾；１０％强力浏阳霉素１０００～１５００倍，２０％螨速杀乳油、２０％扫螨净乳油１０００倍，５％尼索朗乳油２０００倍稀释液，针对性喷雾防治棉叶螨。</span></p><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; overflow-wrap: break-word !important; outline: none 0px !important;"></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>