| 施氮量对杂交棉干物质及氮、磷、钾积累和产量与品质的影响 |
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| 引用本文： | 李伶俐,房卫平,谢德意,马宗斌,杜远仿,张东林.施氮量对杂交棉干物质及氮、磷、钾积累和产量与品质的影响[J].河南农业大学学报,2010,44(6). |
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| 作者姓名： | 李伶俐 房卫平 谢德意 马宗斌 杜远仿 张东林 |
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| 作者单位： | 河南农业大学农学院;河南省农业科学院经济作物研究所;开封县棉花办公室; |
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| 摘 要： | 在高产条件下,研究了施氮0,75,150,225,300和375 kg·hm-2对杂交棉豫杂37号在不同生育阶段其干物质和氮、磷、钾的积累及产量和品质的影响.结果表明,增施氮肥显著提高了杂交棉干物质和氮、磷、钾的积累量,特别是显著提高了杂交棉后期干物质与氮、磷、钾的积累量及积累比例.就产量水平看,本试验以施氮量300 kg·hm-2的子棉产量最高,比施氮量225 kg·hm-2的增产1.66%,但增产不显著;而施氮量达375 kg·hm-2,其子棉产量比300 kg·hm-2的减产3.92%、比225 kg·hm-2减产2.23%.随施氮量增加,氮肥利用率明显下降,而磷和钾的利用提高.就纤维品质指标看,施氮可以提高纤维长度和纤维比强度,而施氮处理间纤维长度和比强度差别不大,以225 kg·hm-2处理的纤维比强度最大.
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| 关 键 词： | 杂交棉 施氮量 干物质 积累量 产量 品质 |
Effect of nitrogen application rate on accumulation of dry matter and N, P, K in different periods of cotton growth as well as yield and quality of hybrid cotton under high-yield cultivated condition |
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| LI Ling-li,FANG Wei-ping,XIE De-yi,MA Zong-bin,DU Yuan-fang,ZHANG Dong-lin.Effect of nitrogen application rate on accumulation of dry matter and N, P, K in different periods of cotton growth as well as yield and quality of hybrid cotton under high-yield cultivated condition[J].Journal of Henan Agricultural University,2010,44(6). |
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| Authors: | LI Ling-li FANG Wei-ping XIE De-yi MA Zong-bin DU Yuan-fang ZHANG Dong-lin |
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| Institution: | LI Ling-li1,FANG Wei-ping2,XIE De-yi2,MA Zong-bin1,DU Yuan-fang3,ZHANG Dong-lin3(1.College of Agronomy,Henan Agricultural University,Zhengzhou 450002,China,2.Economy Crop Research Institute,Henan Academy of Agricultural Sciences,3.Kaifeng County Cotton Production Office,Kaifeng 475100,China) |
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| Abstract: | |
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| Keywords: | hybrid cotton nitrogen application rate dry matter accumulation yield quality |
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