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棉花学报  2012 

滨海旱碱地微沟覆膜植棉模式的研究

DOI: 1002-7807(2012)04-0318-07, PP. 318-324

Keywords: 旱碱,棉花,微沟覆膜,集雨,植棉模式

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Abstract:

试验以棉花品种沧198为材料,以常规植棉为对照,在旱碱地条件下研究了微沟覆膜植棉(开15cm深的浅沟,地膜覆盖,膜上打孔种植)对棉花根际土壤水分、电导率,对出苗、成苗、棉苗素质及某些生理特征的影响。结果表明,与常规植棉相比,微沟覆膜棉花苗期根际土壤含水量显著提高,土壤电导率显著降低;微沟覆膜的出苗率提高了12%,现蕾期棉株株高、茎粗、干物质质量分别提高了10.5%、6.9%、8.9%,主茎功能叶SOD、POD活性、脯氨酸含量分别降低了13.7%、18.0%、11.7%;微沟覆膜棉花的单铃重与产量分别提高了7.3%、8.1%;微沟覆膜通过集雨压盐,改善了棉花根际环境,增强了棉苗素质,从而提高产量。

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