| 杂交棉稀植栽培施肥技术研究 |
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| 作者姓名： | 李伶俐 王文亮 房卫平 谢德意 马宗斌 台国琴 |
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| 作者单位： | 河南农业大学农学院 郑州450002
(李伶俐，王文亮，马宗斌)，河南省农业科学院棉花油料作物研究所 郑州450002
(房卫平，谢德意)，河南农业大学农学院 郑州450002(台国琴) |
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| 基金项目： | 河南省科技攻关项目“麦棉两熟资源优化利用综合技术体系研究”的部分内容（0322010800）. |
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| 摘 要： | 在大田2.4万株/hm2的稀植栽培条件下,采用相同的氮磷钾配比,四个不同水平的氮磷钾施用量组合处理,对杂交棉予杂35群体的生长发育特点及产量进行了研究,结果表明:氮磷钾施肥量增加可明显地促进群体干物质积累和叶面积增长,增加单株铃数和群体总铃数,显著地提高生物产量和经济产量。但是,当氮磷钾施肥量达到每公顷施N:195kg、P2O5:97.5kg、K2O:136.5kg后,再增加施肥量则增产不显著,肥效降低,而且霜前花率和子棉经济系数降低。
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| 关 键 词： | 杂交棉 稀植栽培 施肥 产量 |
Research on Fertilization Technology for Hybrid Cotton under Sparse Planting |
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| Authors: | Li Lingli Wang Wenliang Fang Weipin Xie Deyi Ma Zongbin Tai Guoqin |
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| Institution: | (1College of Agronomy, Henan Agricultural University, Zhengzhou 450002; 2Cotton and Oil
Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002) |
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| Abstract: | The growth, development and yield of population of hybrid cotton YUZAO 35 was researched under different treatments with different level of fertilization in the same proportion of nitrogen, phosphorus and potassium under sparse planting by 24000 plants per hectare. The results showed that increased the sowing rate of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer promoted accumulation of population dry matter and increased leaf area obviously, the bolls per plant and the total bolls of cotton population were increased also, thus the biomass yield and economic yield were enhanced markedly. While the yield increasing become insignificant, and the fertilizer effect as well as the percentage of pre-frost harvested lint reduced when the fertilizer sowing rate of nitrogen(N) ,phosphorus(P2O5) and potassium(K2O) per hectare exceeded 195kg/hm2,97.5kg/hm2and 136.5kg/hm2 respectively . |
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| Keywords: | Hybrid cotton Sparse planting Fertilization Yield |
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