<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: 14px; overflow-wrap: break-word !important; outline: none 0px !important;">　　棉花烂铃病是棉花高产、优质、高效生产的严重障碍。</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: 14px; overflow-wrap: break-word !important; outline: none 0px !important;">　　棉花铃期的主要病害是烂铃。棉花烂铃是一个极其复杂的问题，是受多种因子综合作用引起的。单就侵染病菌而言，常年发生较为普遍的就有棉铃疫病、炭疽病、角斑病、红腐病、红粉病和黑果病。棉花烂铃病就是在适宜的气候和栽培等环境条件下，由上述病菌共同作用而引发的复合性病害。但是在造成烂铃病的多种病害中，以棉铃疫病最为重要，该病不仅能直接引起烂铃，而且它的发生可引起多种病害并加重烂铃的发展。因此，棉铃疫病是棉花铃期病害的主要防治对象。</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: 14px; overflow-wrap: break-word !important; outline: none 0px !important;">　　影响病害发生的主要因素是湿度，为合理控制群体、改善棉田通风透光环境以及降低田间湿度所采取的各种栽培措施，就是控制烂铃的重要手段。可以根据棉花品种特性，结合地力情况，合理配置株行距，遇雨及时排水、中耕散墒，降低棉田湿度。适时整枝修棉，剪空枝或推株并垄。降雨遇风吹倒棉株，雨后要及时扶正。在棉花整个生长过程中要推广使用全程化控措施，在用肥上要注意氮肥的适量运用，以防棉株徒长，利于棉田通风透光。在铃病初发期，要及时摘除烂铃以防病菌扩大侵染。另外，也可采用喷药的措施来保护。在发病初期，可用９０％乙膦铝可湿性粉４００倍液、２５％代森猛锌悬浮剂１５０～２００倍液、６％多菌铜２５～４０倍液，对以中、下部为主的棉铃着重喷雾防治，每隔１０～１５天喷洒一次，每亩药液用量不低于７５千克，连续喷２～３次，对防治烂铃有一定效果。</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>