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	不同耕作措施下旱作麦田CO_2排放速率与土壤水热关系分析
其他题名	Relationship Analysis of CO_2 Emission Fluxes and Soil Temperature and Moisture in Rainfed Wheat Field with Different Tillage
	杨玲 1; 廖允成 2; 高茂盛 3
来源期刊	西北农业学报
ISSN	1004-1389
出版年	2011
卷号	20 期号:1 页码:70-75
中文摘要	采用定位试验,系统研究翻耕(T),翻耕+秸秆还田(TS),旋耕(RT),旋耕+秸秆还田(RTS),免耕(NT),免耕+秸秆覆盖(NTS)6种不同耕作措施下土壤CO2排放速率的季节变化规律,分析土壤CO2排放速率与土壤水热的相互关系.结果表明,CO2排放速率有明显的季节变化规律,均表现为冬季低夏季高;整个生长季平均排放速率为TS>T>RTS>RT>NTS>NT,并且T,RT,NT 3种耕作措施之间差异均达到极显著水平(P<0.01);TS,RTS,NTS 3种有秸秆耕作措施的CO2排放速率均高于相应的T,RT,NT 3种无秸秆耕作措施,且T与TS之间差异达到极显著水平;土壤温度和CO2排放速率表现为极显著正相关,T,RT和NT分别与15,5,10 cm土层温度相关性最大,相关系数分别为0.899,0.779,0.934;土壤含水量与CO2排放速率未表现出显著相关性
英文摘要	In order to find out the effects of conservation tillage on the emission of CO2 fluxes, the relationships of soil respiration with soil temperature and soil water in arid areas,a short term experiment was conducted with 6 treatments including deep tillage(T), deep tillage with straw application(TS), rotary tillage(RT), rotary tillage with straw application(RTS),no tillage(NT) and no tillage with straw application(NTS) in Yangling Shaanxi,P.R China. Data was recorded and analyzed. The results showed that the CO2 emission fluxes had obvious seasonal variations. The order of CO2 fluxes emission was TS>T>RTS>RT>NTS>NT, and the differences of these different treatments were highly significant at 0.01 level. The emissions of CO2 fluxes from the straw treatments were higher than those of no straw treatments. The relationship of soil.respiration and soil temperature also showed significant positive correlation. Treatments of T, RT and NT had the best correlation at 15,5 and 10 cm soil layer. Their correlation coefficients were 0.899,0.779 and 0.934. While no significant correlation was recorded between soil respiration and soil water
中文关键词	耕作措施 ; CO2排放速率 ; 旱作麦田 ; 土壤水热
英文关键词	Tillage method CO2 fluxes emission Dry land Wheat Soil temperature and soil water
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4135714
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227224
作者单位	1.西北农林科技大学林学院, 杨凌, 陕西 712100, 中国; 2.西北农林科技大学农学院, 杨凌, 陕西 712100, 中国; 3.陕西省农业遥感信息中心, 西安, 陕西 710015, 中国
推荐引用方式 GB/T 7714	杨玲,廖允成,高茂盛. 不同耕作措施下旱作麦田CO_2排放速率与土壤水热关系分析[J]. 西北农林科技大学,2011,20(1):70-75.
APA	杨玲,廖允成,&高茂盛.(2011).不同耕作措施下旱作麦田CO_2排放速率与土壤水热关系分析.西北农业学报,20(1),70-75.
MLA	杨玲,et al."不同耕作措施下旱作麦田CO_2排放速率与土壤水热关系分析".西北农业学报 20.1(2011):70-75.