| 不同形态外源氮素营养对棉花苗期氮素代谢的影响 |
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| 引用本文： | 董海荣,李金才,李存东.不同形态外源氮素营养对棉花苗期氮素代谢的影响[J].河北农业大学学报,2009,32(3). |
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| 作者姓名： | 董海荣 李金才 李存东 |
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| 作者单位： | 河北农业大学,河北保定,071001 |
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| 基金项目： | 国家自然科学基金，河北省自然科学基金，河北省科技厅科学研究项目，河北省教育厅科研项目，河北省教育厅科研项目 |
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| 摘 要： | 试验通过水培的方法,研究了不同形态外源氮素营养对棉花苗期氮素代谢的影响。结果表明:混合态氮素营养有利于棉花根系和叶片中可溶蛋白的积累,且NH4+/NO3-比为50/50对根系中可溶蛋白的积累最为有利,NH4+/NO3-比为75/25对叶片中可溶蛋白的积累最为有利。不同形态的外源氮素营养改变了棉花植株全氮和铵基态氮的积累,以及硝酸还原酶活性和碳氮比动态,从而使棉花对于外源氮素营养的吸收和同化效率发生了改变。
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| 关 键 词： | 棉花 NH4+ NO3- 氮 代谢 |
Influence of different ratios of NH_4~+/NO_3~- on nitrogen metabolism of cotton |
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| DONG Hai-rong,LI Jin-cai,LI Cun-dong.Influence of different ratios of NH_4~+/NO_3~- on nitrogen metabolism of cotton[J].Journal of Agricultural University of Hebei,2009,32(3). |
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| Authors: | DONG Hai-rong LI Jin-cai LI Cun-dong |
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| Institution: | Hebei Agricultural University;Baoding 071001;China |
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| Abstract: | This study was conducted under controlled hydroponics to value the influence of different nitrogen nutrition on nitrogen metabolism of young cotton.The results showed that the mixed nitrogen nutrition is helpful to soluble protein accumulation in leaves and roots of cotton.And the solution of 50/50 NH4+/NO3percentage is the best for root and 75/25 one for leaves.At the same time,the result showed that the different nitrogen nutrition led to the different accumulation of total nitrogen and NH4+-N,and also le... |
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| Keywords: | NH4 NO3- |
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