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当前位置: 首页 > 文章 > 水稻生长及其体内C、N、P组成对开放式空气CO_2浓度增高和N、P施肥的响应 应用生态学报 2002,13 (10) 1223-1230
Position: Home > Articles > Responses of rice (Oryza sativa) growth and its C, N and P composition to FACE (Free-air Carbon Dioxide Enrichment) and N,P fertilization. Chinese Journal of Applied Ecology 2002,13 (10) 1223-1230

水稻生长及其体内C、N、P组成对开放式空气CO_2浓度增高和N、P施肥的响应

作  者：
谢祖彬;朱建国;张雅丽;马红亮;刘钢;韩勇;曾青;蔡祖聪
单  位：
中国科学院南京土壤研究所土壤圈物质循环重点实验室;中国科学院
关键词：
CO2浓度升高;水稻生长;C/N比;N和P含量;N和;P吸收
摘  要：
采用FACE(FreeAirCarbon dioxideEnrichment)技术 ,研究了不同N、P施肥水平下 ,水稻分蘖期、拔节期、抽穗期和成熟期根、茎、叶、穗生长 ,C/N比 ,N、P含量及N、P吸收对大气CO2 浓度升高的响应 .结果表明 ,高CO2 促进水稻茎、穗和根的生长 .增加分蘖期叶干重 ,对拔节期、抽穗期和成熟期叶干重没有显著增加 .降低茎、叶N含量 ;增加抽穗期穗N含量 ,降低成熟期穗N含量 ;对分蘖期根N含量影响不显著 ,而降低拔节期、抽穗期和成熟期根N含量 .增加拔节期、抽穗期和成熟期叶P含量 ,对茎、穗、根P含量影响不显著 .水稻各组织C含量变化不显著 .C/N比增加 .显著增加水稻地上部分P吸收 ;增加N吸收 ,但没有统计显著性 .N、P施用对水稻各组织生物量没有显著影响 .高N(HN)比低N(LN)增加组织中N含量 ,而不同P肥水平间未表现出明显差异 .高N条件下高CO2 增加水稻成熟期地下部分 /地上部分比 .文中还讨论了高CO2 对N、P含量及地下部分 /地上部分比的影响机制 .
译  名：
Responses of rice (Oryza sativa) growth and its C, N and P composition to FACE (Free-air Carbon Dioxide Enrichment) and N,P fertilization.
作  者：
XIE Zubin, ZHU Jianguo, ZHANG Yali, MA Hongliang, LIU Gang, HAN Yong,ZENG Qing and CAI Zucong (Key Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008).
关键词：
Free-air CO 2 enrichment, Rice growth, C/N, N and P content,N and P uptake.
摘  要：
FACE (Free-air Carbon Dioxide Enrichment) was used to study the effects of elevated CO 2 on rice (Oryza sativa) growth,tissue C/N,N and P concentration and uptake at different development stages under two N and two P levels. Results showed that elevated CO 2 increased dry matter accumulation in rice stem, ear and root. Leaf dry matter was increased at tillering stage and no significant effect was found at jointing, heading and ripening stages. N concentration of stem and leaf was decreased. Ear N concentration at heading stage was increased but was decreased at ripening stage. No significant effect was found on root N concentration at tillering stage but root N concentration at jointing, heading and ripening was decreased. Leaf P concentration at jointing, heading and ripening was increased but no significant effect was found on P concentration in stem, ear and root. C content in various tissues changed unremarkably and the ratio of C over N (C/N) was increased. Elevated CO 2 significantly increased P uptake in aboveground tissues; and increased N uptake, but the difference was not statistically significant. N and P fertilization had no significant effect on various tissue dry biomass. Tissue N content at higher N fertilization was higher than at lower N fertilization but no such effect of P fertilization on tissue P content was found. At higher N fertilization, elevated CO 2 increased the ratio of below-ground biomass over above-ground biomass at ripening stage. Possible reasons are discussed for the differences of tissue N and P content and the ratio of below-ground biomass over above-ground biomass between elevated and ambient atmospheric CO 2 concentrations.

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