Integrative effects of soil tillage and straw management on crop yields and greenhouse gas emissions in a rice-wheat cropping system

doi:10.1016/j.eja.2014.11.005

	Integrative effects of soil tillage and straw management on crop yields and greenhouse gas emissions in a rice-wheat cropping system
	Zhang, Li 1; Zheng, Jianchu 2; Chen, Liugen 2; Shen, Mingxing 3; Zhang, Xin 4; Zhang, Mingqian 1; Bian, Xinmin 1; Zhang, Jun 4; Zhang, Weijian 1,4
刊名	EUROPEAN JOURNAL OF AGRONOMY
	2015
卷号	63 页码:47-54
关键词	Food security Climate change CH4 emission N2O emission Soil tillage Straw management
ISSN号	1161-0301
DOI	10.1016/j.eja.2014.11.005
通讯作者	Zhang, Li
英文摘要	Significant efforts have been made to assess the impact of tillage regimes on crop yields and/or greenhouse gas (GHG) emissions across single crop growing season. However, few studies have quantified the impact across a whole rotation cycle in multiple cropping systems. Utilizing on a long-term tillage experiment with the rice wheat rotation system in East China, we examined the GHG emissions under different tillage practices with or without crop straw incorporation. Results showed that compared to the no-straw control, straw incorporation increased wheat yield by 28.3% (P < 0.05), irrespective of tillage practices, but had no significant effect on rice yield. Although straw incorporation did not significantly affect CH4 emissions during the wheat season and N2O emissions during the whole rice wheat cycle, it significantly stimulated CH4 emissions by 98.8% (P < 0.01) during the rice season. Also, there were no significant differences in CH4 and N2O emissions between tillage practices during the wheat season. Compared to plowing, rotary tillage increased CH4 emissions significantly by an average of 38.8% (P < 0.01) but had no significant impacts on N2O emissions during the rice season. Across the rotation cycle, annual yield-scaled global warming potential of CH4 and N2O emissions under no-tillage plus rotary tillage was 26.8% (P < 0.01) greater than that of rotary tillage plus plowing with or without straw incorporation. Significant interactions between soil tillage and straw management practices were found on annual GHG emissions, but not on crop yields. Together, these results indicate that plowing in the rice season plus rotary tillage in the wheat season may reduce GHG emissions while increasing crop yield in rice wheat cropping areas. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	Agronomy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000349268000005
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/4772]
专题	作物科学研究所_栽培生理学系
作者单位	1.Nanjing Agr Univ, Inst Appl Ecol, Nanjing 210095, Jiangsu, Peoples R China 2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China 3.Inst Agr Sci Taihu Lake Dist, Suzhou 215100, Peoples R China 4.Chinese Acad Agr Sci, Inst Crop Sci, Key Lab Crop Physiol & Ecol, Minist Agr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Li,Zheng, Jianchu,Chen, Liugen,et al. Integrative effects of soil tillage and straw management on crop yields and greenhouse gas emissions in a rice-wheat cropping system[J]. EUROPEAN JOURNAL OF AGRONOMY,2015,63:47-54.
APA	Zhang, Li.,Zheng, Jianchu.,Chen, Liugen.,Shen, Mingxing.,Zhang, Xin.,...&Zhang, Weijian.(2015).Integrative effects of soil tillage and straw management on crop yields and greenhouse gas emissions in a rice-wheat cropping system.EUROPEAN JOURNAL OF AGRONOMY,63,47-54.
MLA	Zhang, Li,et al."Integrative effects of soil tillage and straw management on crop yields and greenhouse gas emissions in a rice-wheat cropping system".EUROPEAN JOURNAL OF AGRONOMY 63(2015):47-54.