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棉花学报  2013 

杏棉间作田间配置对棉花生长发育及棉铃时空分布的影响

DOI: 1002-7807(2013)01-0037-08, PP. 37-44

Keywords: 杏棉间作,田间配置,棉花,生长发育,棉铃分布

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Abstract:

为实现杏棉间作复合农业生态条件下棉花高产栽培,在杏树株行距配置为3m×6.5m、树高5.45m条件下,研究了棉花3种不同田间配置对棉花生长发育及棉铃时空分布的影响。结果表明,株距10cm、种植10行(B处理)棉花的株宽比最低,棉花的真叶数、倒4叶宽及果枝数有优势。棉花茎粗与棉花的株距呈正比。棉花单株干物质质量在整个生育期表现为B处理高于其余2个处理,并且毛地棉花群体干物质积累与单株干物质积累变化趋势一致;净地群体干物质质量则随着棉花净地密度的增大而增大。遮阴推迟了棉花生长发育,导致3种配置下棉花均以伏桃和秋桃为主;横向分布内围铃是构成棉铃主要部分,并且内围铃所占比例随着株距的增大而增加;纵向分布均以中下部棉铃为主。毛地皮棉产量表现为株距10cm配置(B处理)时最高,分别比株距12cm、8cm的高4.69%、19.96%;净地皮棉产量则表现为株距8cm配置时最高,比株距10cm、12cm配置的分别高7.18%、30.91%。

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