马红亮, 朱建国, 谢祖彬, 曾青, 刘钢. CO2浓度升高对水稻生物量及C、N吸收分配的影响[J]. 中国生态农业学报(中英文), 2005, 13(3): 38-41.
引用本文: 马红亮, 朱建国, 谢祖彬, 曾青, 刘钢. CO2浓度升高对水稻生物量及C、N吸收分配的影响[J]. 中国生态农业学报(中英文), 2005, 13(3): 38-41.
MA Hong-Liang, ZHU Jian-Guo, XIE Zu-Bin, ZENG Qing, LIU Gang. Effects of C02 enrichment on the allocation of biomass and C,N uptake in rice organs[J]. Chinese Journal of Eco-Agriculture, 2005, 13(3): 38-41.
Citation: MA Hong-Liang, ZHU Jian-Guo, XIE Zu-Bin, ZENG Qing, LIU Gang. Effects of C02 enrichment on the allocation of biomass and C,N uptake in rice organs[J]. Chinese Journal of Eco-Agriculture, 2005, 13(3): 38-41.

CO2浓度升高对水稻生物量及C、N吸收分配的影响

Effects of C02 enrichment on the allocation of biomass and C,N uptake in rice organs

  • 摘要: 采用FACE(Free Air Carbon-dioxide Enrichment)技术研究2种N水平下CO2浓度升高对水稻生物量及C、N吸收分配的影响结果表明,与对照相比,高c02 显著降低水稻生物量和c在叶的分配比例,增加其茎、穗和根的分配。高c02 使N在叶的分配降低,穗的分配增加;低N和常规N处理水稻抽穗期根的分配分别降低9.67%和l3.1% ,其他生育期则增加3.5%~26.6% ;拔节期茎的分配分别增加7.O3%和5.71% ,成熟期分别降低1O.5% 和7.43%。N水平对水稻生物量和养分分配的影响不显著。

     

    Abstract: The effects of C02 enrichment on the allocation of biomass,C and N accumulation in rice organs under 2 levels of N were studied.The results shown that the elevated C02 decreased significantly the allocation of biomass and C content in rice leaves and increased their allocation in shoot,ear and root,decreased the allocation of N content in leaves and increased the allocation in ear.Under 1owar N and normal N trea tments。the alloc ation of N in ro t decreased by 9.67% and 13.1% respectively at heading stage and increased by 3.5%~ 26.6% at other stages .the allocation of N in shoot increased by 7.03% and 5.71% atjointing stage and decreased by10.5% and 7.43% at ripening stage respectively.There was not significant influence of N levels on the allocation of biomass,C and N in rice organs.

     

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