<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;">　　棉花与西瓜套种是高肥水地增加单位面积经济收益的重要栽培途径。主要有以下技术环节。</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;">　　（１）品种选择：为缩短棉花与西瓜的共生期，西瓜应选用早熟或中早熟的品种，主要有郑杂９号、京欣１号、苏蜜１号、金钟冠龙等。棉花应选用株型大、长势强、不早衰的高产抗虫棉品种，最好选用抗虫杂交棉品种，如鲁棉研１５号、GK２５、GK２６、GK２９、中棉所２９号等。</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;">　　（２）整地施肥：秋末冬初时节深耕土地，来年春复耕整３</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;">　　平，冬耕时重施底肥，每亩底施粗肥４～５米 ，磷酸二铵２５千克，碳酸氢铵２５千克，硫酸钾２０千克。春季按种植模式挖５０～６０厘米宽、３０～４０厘米深的瓜沟，填入部分基肥和熟土，再将挖出的土翻入做成龟背高畦或锯齿畦。</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;">　　（３）种植模式：主要有西瓜与棉花“一二”式间作和西瓜与棉花“二二”式间作。</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;">　　“一二”式，即１行西瓜２行棉花。西瓜行距一般１６０～１７０厘米，株距４５～５０厘米，亩种植８００～１０００株。３月下旬至４月上旬将瓜苗定植在覆膜龟背高畦中间，于４月中下旬在西瓜地膜两侧打孔各套种１行棉花，或４月底５月初各移栽１行棉花，棉瓜间距２５～３０厘米，棉花小行距６０厘米左右，棉花密度３０００～３５００株／亩。</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;">　　“二二”式，即西瓜与棉花各种植２行。种植带宽约３００厘米，西瓜小行距６０～８０厘米，株距５０厘米，亩种植１０００株左右，采用小拱棚双层覆盖或两膜一苫三层覆盖栽培，拱棚跨度１５０厘米、高８０厘米。在西瓜大行间穴播２行棉花，行距８０～１００厘米，穴距２５厘米，亩种植３０００～３５００株。该模式西瓜可提前定植，有利于西瓜早熟早上市，对棉花产量影响相对较大。</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;">　　（４）田间管理：西瓜播种后，苗期不浇水。西瓜蔓长３０～４０厘米时及时压蔓。西瓜开花后，人工辅助授粉。坐瓜后浇膨瓜水。第二个瓜长出后，摘去第一个瓜。６月上旬，西瓜开始陆续摘瓜，６月下旬拉秧。棉花苗期、蕾期与西瓜共生，土壤湿度大，棉苗较正常，棉田植株发育快，苗期注意防治苗蚜，现蕾后及时化控，防止棉花徒长。６月下旬西瓜拉秧后，加强棉花管理，及时揭膜中耕除草，趁雨追肥，亩追尿素１５千克，花铃期亩追施尿素１５千克，７月中旬适时打顶，合理化控。由于套播棉田密度小，可适当晚打群尖或不打群尖，增加单株结铃。</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;">　　（５）虫害防治：西瓜与棉花套作，共生期相对较长，必须慎重对待田间施药，一般情况下尽量不用药，十分必要时必须选择高效、低毒、低残留的农药，以确保上市西瓜的无公害品质。一般情况下，对二代棉铃虫不进行防治，个别年份二代棉铃虫发生严重时，可以选用滴心保顶的用药方式，西瓜收获以后再喷药防治。当苗蚜、棉叶螨等害虫达到防治指标时，一定要选用高效、低毒、低残留的抗生素类和烟碱类农药。</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>