| 海拉尔地区苜蓿栽培草地土壤呼吸特性研究 |
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| 引用本文： | 徐丽君,辛晓平,郭明英,杨桂霞. 海拉尔地区苜蓿栽培草地土壤呼吸特性研究[J]. 草业科学, 2010, 27(11): 7-12. DOI: 10.3969/j.issn.1001-0629.2010.11.002 |
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| 作者姓名： | 徐丽君 辛晓平 郭明英 杨桂霞 |
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| 作者单位： | 农业部资源遥感与数字农业重点开放实验室,呼伦贝尔国家野外站,中国农业科学院农业资源与农业区划研究所,北京,100081;内蒙古农业大学,内蒙古,呼和浩特,010019 |
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| 基金项目： | 草畜业数字化管理与优化决策技术研究(2007AA10Z230); “现代农业产业技术体系建设专项资金”; 公益性行业(农业)科研专项(200903060); 农业部资源遥感与数字农业重点开放实验室开放课题(RAD1009) |
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| 摘 要： | 使用便携式土壤呼吸测定仪(Li-6400)测定不同苜蓿品种栽培草地的土壤呼吸,并同步测定植株根系形态指标、土壤层温度、大气温度和土壤含水量。结果表明,黄花苜蓿(Medicago falcata)、龙牧801(M.sativacv.Longmu801)和肇东苜蓿(M.sativacv.Zhaodong)草地土壤呼吸的日最高值均出现在6:00,最低值分别出现在14:00、8:00和12:00,杂花苜蓿(M.varia)草地土壤呼吸速率最大值出现在8:00,最低值出现在14:00;4个苜蓿品种草地土壤呼吸速率值总体变化趋势是肇东苜蓿黄花苜蓿、杂花苜蓿龙牧801;土壤呼吸与植株根系、土壤温度呈线性正相关,与大气温度呈一元二次函数正相关,与土壤含水量呈负相关。
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| 关 键 词： | 苜蓿草地 土壤呼吸 根系 影响因子 |
The soil respiration characteristics of alfalfa pasture in Hailar regions |
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| XU Li-jun,XIN Xiao-ping,GUO Ming-ying,YANG Gui-xia. The soil respiration characteristics of alfalfa pasture in Hailar regions[J]. Pratacultural Science, 2010, 27(11): 7-12. DOI: 10.3969/j.issn.1001-0629.2010.11.002 |
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| Authors: | XU Li-jun XIN Xiao-ping GUO Ming-ying YANG Gui-xia |
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| Affiliation: | XU Li-jun1,XIN Xiao-ping1,GUO Ming-ying2,YANG Gui-xia1(1.Key Lab of Resources Remote Sensing , Digital Agriculture,Hulunber Grassl, Ecosystem Observation , Research Station,Institute of Agricultural Resources , Regional Planning of Chinese Academy of Agricultural Sciences,Beijing 100081,China,2.Inner Mongolia Agricultural University,Inner Mongolia Hohhot 010019,China) |
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| Abstract: | A field survey was conducted to measure the soil respiration rate of alfalfa varieties pasture(Huanghua,Longmu801,Zahua and Zhaodong) by using Li-6400 and to measure root morphology,soil temperature,air temperature and soil water content.The results of this study showed that Huanghua,Longmu801 and Zhaodong showed the maximum of soil respiration rate at 6:00 and the minimum of soil respiration rate at 14:00,8:00 and 12:00,respectively.The maximum soil respiration rate of Zahua was found at 8:00,and the minim... |
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| Keywords: | alfalfa pasture soil respiration rate root system impact factor |
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