Response of Yield,Microbial Community Composition and Soil Respiration in Rhizosphere of Rape Intercropped with Chinese Milk Vetch
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- 英文论文题名：Response of Yield,Microbial Community Composition and Soil Respiration in Rhizosphere of Rape Intercropped with Chinese Milk Vetch
- 论文作者：周泉 ; 王龙昌
- 英文论文作者：Quan Zhou ; Longchang Wang
- 年：2016
- 作者机构：西南大学农学与生物科技学院;
- 英文论文关键词：root interaction ; straw mulching ; root separation ; soil microorganism ; carbon emission
- 会议召开时间：2016-10-26
- 会议录名称：2016年全国青年作物栽培与生理学术研讨会论文集
- 语种：英文
- 分类号：S565.4;S551.9
- 学会代码：CSSC
- 会议名称：2016年全国青年作物栽培与生理学术研讨会
- 会议地点：中国山东泰安
- 主办单位：中国作物学会
- 学会名称：中国作物学会
- 页数：1
- 文件大小：59k
- 原文格式：O
- 会议级别：全国
摘要
【Background】In the context of global warming,the management of agricultural carbon emissions has become more and more imperative,and green manuring has great potential to curb agricultural carbon emissions.The present study aimed at investigating the role of Chinese milk vetch intercropping with rape to enhance the soil productivity and suppress the carbon emission impact in purple soil region of Southwest,China.【Materials and Methods】 A series of pot experiments included three root separation methods and two straw mulching methods,were employed to explore the soil properties,rape growth,the soil microorganism and the soil respiration in response to Chinese Milk Vetch.Results】 The intercropping green manure(Chinese milk vetch) substantially decreased the organic carbon content and the total PLFA(phospholipid fatty acid) in rape rhizosphere,and strongly inhibited the growth of anaerobic bacteria.In addition,the structure of soil microbial community in rape straw mulching rhizosphere also changed greatly,which was significantly correlated with 16:lw9c and 18:3w6c(6,9,12).During the rape cultivation,Chinese milk vetch considerably inhibited the elevation of soil temperature and decreased the soil carbon flux in rape rhizosphere.The soil respiration presented the general trend of fall-rise-fall and a cubic curve relationship with soil temperature.It was proved that soil respiration was positively correlated with soil temperature in a certain range,and it was also closely related to the crop growth.【Conclusions】 Our findings revealed that Chinese milk vetch as a green manure may be helpful to manage the agricultural carbon emissions,increase soil productivity,improve the structure of soil microbial community and suppress carbon emissions.
【Background】In the context of global warming,the management of agricultural carbon emissions has become more and more imperative,and green manuring has great potential to curb agricultural carbon emissions.The present study aimed at investigating the role of Chinese milk vetch intercropping with rape to enhance the soil productivity and suppress the carbon emission impact in purple soil region of Southwest,China.【Materials and Methods】 A series of pot experiments included three root separation methods and two straw mulching methods,were employed to explore the soil properties,rape growth,the soil microorganism and the soil respiration in response to Chinese Milk Vetch.Results】 The intercropping green manure(Chinese milk vetch) substantially decreased the organic carbon content and the total PLFA(phospholipid fatty acid) in rape rhizosphere,and strongly inhibited the growth of anaerobic bacteria.In addition,the structure of soil microbial community in rape straw mulching rhizosphere also changed greatly,which was significantly correlated with 16:lw9c and 18:3w6c(6,9,12).During the rape cultivation,Chinese milk vetch considerably inhibited the elevation of soil temperature and decreased the soil carbon flux in rape rhizosphere.The soil respiration presented the general trend of fall-rise-fall and a cubic curve relationship with soil temperature.It was proved that soil respiration was positively correlated with soil temperature in a certain range,and it was also closely related to the crop growth.【Conclusions】 Our findings revealed that Chinese milk vetch as a green manure may be helpful to manage the agricultural carbon emissions,increase soil productivity,improve the structure of soil microbial community and suppress carbon emissions.
【Background】In the context of global warming,the management of agricultural carbon emissions has become more and more imperative,and green manuring has great potential to curb agricultural carbon emissions.The present study aimed at investigating the role of Chinese milk vetch intercropping with rape to enhance the soil productivity and suppress the carbon emission impact in purple soil region of Southwest,China.【Materials and Methods】 A series of pot experiments included three root separation methods and two straw mulching methods,were employed to explore the soil properties,rape growth,the soil microorganism and the soil respiration in response to Chinese Milk Vetch.Results】 The intercropping green manure(Chinese milk vetch) substantially decreased the organic carbon content and the total PLFA(phospholipid fatty acid) in rape rhizosphere,and strongly inhibited the growth of anaerobic bacteria.In addition,the structure of soil microbial community in rape straw mulching rhizosphere also changed greatly,which was significantly correlated with 16:lw9c and 18:3w6c(6,9,12).During the rape cultivation,Chinese milk vetch considerably inhibited the elevation of soil temperature and decreased the soil carbon flux in rape rhizosphere.The soil respiration presented the general trend of fall-rise-fall and a cubic curve relationship with soil temperature.It was proved that soil respiration was positively correlated with soil temperature in a certain range,and it was also closely related to the crop growth.【Conclusions】 Our findings revealed that Chinese milk vetch as a green manure may be helpful to manage the agricultural carbon emissions,increase soil productivity,improve the structure of soil microbial community and suppress carbon emissions.
引文