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大气CO_2浓度和供氮水平对油菜前期生长及氮素吸收利用的影响

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成果类型:
期刊论文
作者:
王小娟;王文明;张振华;张力;杨春;...
通讯作者:
Song, H.-X.
作者机构:
[张振华; 宋海星; 张力; 杨春; 王文明] College of Resources and Environmental Sciences Hunan Agricultural University, Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use, Hunan Provincial Key Laboratory of Plant Nutrition in Common University, Changsha, 410128, China
Hainan Province Academy of Agricultural Science, Haikou, 571100, China
[官春云] National Center of Oilseed Crops Improvement, Hunan Branch, Changsha, 410128, China
[王小娟] College of Resources and Environmental Sciences Hunan Agricultural University, Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use, Hunan Provincial Key Laboratory of Plant Nutrition in Common University, Changsha, 410128, China, Hainan Province Academy of Agricultural Science, Haikou, 571100, China
通讯机构:
[Song, H.-X.] C
College of Resources and Environmental Sciences Hunan Agricultural University, Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use, Hunan Provincial Key Laboratory of Plant Nutrition in Common University, Changsha, China
语种:
中文
关键词:
干物质累积;根系特性;氮素吸收累积;油菜
关键词(英文):
Dry biomass accumulation;Nitrogen absorption and accumulation;Oilseed rape;Root character
期刊:
生态学杂志
ISSN:
1000-4890
年:
2014
卷:
33
期:
1
页码:
83-88
基金类别:
国家自然科学基金项目(31071851和31101596); 湖南省高校创新平台开放基金项目(09K049);湖南省高校创新平台开放基金项目(12K064和10K034); 国家油菜产业技术体系栽培生理岗位; 国家支撑计划项目(2012BAD15B04和2010BAD01B01); 湖南省政府专项资助;
机构署名:
本校为第一且通讯机构
院系归属:
资源环境学院
摘要:
采用砂培试验,在2种CO_2浓度(自然CO_2浓度400 μmol?mol~(-1)和高CO_2浓度700μmol ? mol~(-1))和2种供氮水平(常氮15mmolN ? L~(-1)和氮胁迫5 mmol.N ? L~(-1))下,研究了油菜营养生长阶段的干物质累积和氮素吸收利用的变化。结果表明:高CO_2浓度条件下,油菜株高、根茎粗和干物质累积量增加,其中,常氮条件下,根茎粗和地上部干重的增加幅度大于氮胁迫条件,株高和根系干重增加幅度则常氮条件小于氮胁迫条件;高CO_2浓度下,根体积、根系活跃吸收面积和总吸收面积在2个供氮水平下均增加,而一级侧根数只在常氮条件下增加,根长只在氮胁迫条件下增加;高CO_2浓度条件下,油菜各器官含氮...
摘要(英文):
Dry biomass and changes of nitrogen (N) uptake and utilization in oilseed rape during vegetative growth stage at two levels of CO2 (natural: 400 μmol • mol-1, elevated: 700 μmol • mol-1) and two levels of N application (normal: 15 mmol •L-1, limited: 5 mmol •L-1) were studied in a sand culture experiment. Results showed that plant height, basal diameter and dry biomass were increased under the elevated CO2 concentration, and the increment of either basal diameter or dry biomass at the normal N level was higher than that at the limited N l...

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