不同基因型水稻氮效率的差异机理研究  

Mechanism of Nitrogen Use Efficiency Difference in Different Genotypic Rices

作　　者：李玉嵩[1] 陶诗顺[2] 陈建强[1] 

机构地区：[1]中国地质大学,北京100083 [2]西南科技大学,四川绵阳621000

出　　处：《河南农业科学》2009年第12期30-32,38,共4页Journal of Henan Agricultural Sciences

基　　金：国家"十一五"科技支撑计划重大项目(2006BAD02A05)

摘　　要：以27份不同基因型水稻为供试材料,从中筛选出5个氮高效基因型和8个氮低效基因型,通过对氮高效基因型和氮低效基因型的氮素吸收效率和生理利用效率的对比,发现氮高效基因型的氮素吸收效率远远高于氮低效基因型的,而氮素生理利用效率则没有明显的规律性,因此,认为影响水稻氮效率高低的主要因素是其氮素吸收效率。5 high and 8 low N use efficiency（NUE）genotypes were selected from 27 different rice materials. The N-absorption efficiency and N physiological efficiency of the high NUE genotypes and the low NUE genotypes were compared. The results showed that the N-absorption efficiency of high NUE genotypes was much higher than that of the low NUE genotypes, while the N physiological efficiency was confused. This indicated that the N-absorption efficiency was the main factor affecting the N-use efficiency of rice.

关 键 词：水稻 氮效率 氮素吸收效率 氮素生理利用率 

分 类 号：S511[农业科学—作物学]