<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;">　　必须重视和珍惜使用转基因抗虫棉这一现代生物技术成果，尽量延长现有抗虫基因在生产上的使用年限，延缓棉铃虫对抗虫基因产生抗性种群的时间。研究调查表明，黄河流域棉区大量生产种植的非转基因抗虫小麦、玉米、大豆、花生等农作物，为棉铃虫提供了有效的“庇护所”，因此，在该区域限制上述转基因抗虫作物的生产释放，是控制靶标害虫产生抗性种群的战略要求。</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;">　　必须清楚地认识到转基因抗虫棉并不是“无虫棉”，在生产管理上，要针对转基因抗虫棉田的生态变化特点，充分发挥其持续有效的生态控制作用，掌握以下综合防治策略：</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;">　　以苗期蚜虫、棉叶螨和“伏蚜”、烟粉虱为防治重点，兼治棉铃虫和其他害虫；一般年份二代棉铃虫不施药防治，三、四代棉铃虫应结合防治“伏蚜”、棉叶螨和烟粉虱进行兼治；棉铃虫大发生年份，对二代棉铃虫要适当施药防治，重点保护生长点，对三、四代棉铃虫要注重施药防治，重点保护蕾铃；棉花生长发育后期要注意对棉盲蝽、烟粉虱等害虫的用药防治。在防治害虫的全过程中，要运用合理的防治指标，使用高效低毒化学农药，注意充分保护利用天敌控制害虫的作用，达到最佳的综合防治效果。</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>