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	不同种植模式对农田土壤呼吸速率的影响
其他题名	Effects of different cropping systems on farmland soil respiration
	赵财; 陈桂平; 柴强; 文玉良
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2016
卷号	51 期号:6 页码:24-29
中文摘要	【目的】探讨不同种植模式对农田土壤CO_2排放的影响,以期为农田固碳减排提供理论参考.【方法】以河西绿洲灌区的7种种植模式为研究对象,采用CFX-2开放式呼吸测定系统进行土壤呼吸速率测定.【结果】7类种植模式下农田土壤呼吸速率具有明显的季节变化规律,其中,单作玉米的波动幅度最大,呈先上升再下降的趋势;平均土壤呼吸速率表现为单作玉米>玉米间作豌豆>小麦间作玉米>春小麦复种冬油菜>春小麦复种冬小麦>春小麦复种春油菜>春油菜复种马铃薯,且不同处理间平均土壤呼吸速率差异显著(P<0.05);单作玉米农田土壤呼吸速率最强,春油菜复种马铃薯最小,且单作玉米农田土壤呼吸速率为春油菜复种马铃薯的4.6倍.间作模式下小麦、玉米带土壤呼吸速率较相应的单作分别降低20.9%和26.3%.【结论】7种种植模式中,单作玉米潜在温室气体排放量最大,春油菜复种马铃薯最有利于农田温室气体减排,而间作模式可有效降低配置作物的土壤呼吸速率强度.
英文摘要	【Objective】In order to provide theoretical basis for sequestrating carbon and reducing CO2emission on farmland.【Method】A field experiment was conducted to investigate the effects of different cropping systems on farmland CO2emission,by using a CFX-2portable infrared analyzer to measure the soil respiration rate under 7various cropping patterns in the oasis region of Hexi Corridor,Gansu Province.【Result】Soil respiration rate of various cropping systems had an explicit regular change of seasonal variations. Monoculture maize had the highest fluctuation range,with the range increased at first growing stage and decreased at last with maize harvest.The values order of averaged soil respiration rate were:sole maize(M)> maize//pea(M//P)> wheat//maize(W//M)> wheat-winter rape(WsRw)> wheat-winter wheat(WsWw)> wheat-spring rape(WsRs)>spring rape-potato(RsP).The absolute value of soil respiration rate differed significantly(P<0.05)among treatments.Sole maize had the highest soil respiration rate,while spring rape-potato had the lowest,which was 1/4.6to sole maize.The soil respiration rate of wheat and maize strips in intercropping was decreased by 20.9% and 26.3% as compared to the corresponding sole cropping,respectively.【Conclusion】Spring rape-potato multiple cropping was the optimal treatment in reducing farmland greenhouse gas emissions and thereby mitigating global climate change among the 7tested modes.Intercropping,as well,potentially decreased the soil respiration rate both in pea// maize and wheat//maize.
中文关键词	复种 ; 间作 ; 土壤呼吸速率 ; 秸秆还田
英文关键词	multiple cropping intercropping soil respiration rate straw retention
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5911109
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234180
作者单位	甘肃农业大学农学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	赵财,陈桂平,柴强,等. 不同种植模式对农田土壤呼吸速率的影响[J]. 甘肃农业大学,2016,51(6):24-29.
APA	赵财,陈桂平,柴强,&文玉良.(2016).不同种植模式对农田土壤呼吸速率的影响.甘肃农业大学学报,51(6),24-29.
MLA	赵财,et al."不同种植模式对农田土壤呼吸速率的影响".甘肃农业大学学报 51.6(2016):24-29.