气候变化领域集成服务门户(CCPortal): Integrated farming with intercropping increases food production while reducing environmental footprint

CCPortal

DOI	10.1073/pnas.2106382118
	Integrated farming with intercropping increases food production while reducing environmental footprint
	Chai Q.; Nemecek T.; Liang C.; Zhao C.; Yu A.; Coulter J.A.; Wang Y.; Hu F.; Wang L.; Siddique K.H.M.; Gan Y.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:38
英文摘要	Food security has been a significant issue for the livelihood of smallholder family farms in highly populated regions and countries. Industrialized farming in more developed countries has increased global food supply to meet the demand, but the excessive use of synthetic fertilizers and pesticides has negative environmental impacts. Finding sustainable ways to grow more food with a smaller environmental footprint is critical. We developed an integrated cropping system that incorporates four key components: 1) intensified cropping through relay planting or intercropping, 2) within-field strip rotation, 3) soil mulching with available means, such as crop straw, and 4) no-till or reduced tillage. Sixteen field experiments, conducted with a wide range of crop inputs over 12 consecutive years (2006 to 2017), showed that the integrated system with intercropping generates significant synergies-increasing annual crop yields by 15.6 to 49.9% and farm net returns by 39.2% and decreasing the environmental footprint by 17.3%-when compared with traditional monoculture cropping. We conclude that smallholder farmers can achieve the dual goals of growing more food and lowering the environmental footprint by adopting integrated farming systems. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Environmental sustainability; Food security; Intercropping; Relay-planting; Rhizosphere
语种	英语
scopus关键词	agricultural parameters; agricultural worker; Article; carbon footprint; cropping system; environmental sustainability; food industry; food security; harvest; intercropping; monoculture; nonhuman; rhizosphere
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238380
作者单位	Gansu Provincial Key Laboratory of Aridland Crop Sciences, College of Agronomy, Gansu Agricultural University, Lanzhou, 730070, China; Agroscope, Life Cycle Assessment Research Group, Zurich, CH-8046, Switzerland; Pollutant Inventories and Reporting Division, Environment and Climate Change Canada, Gatineau, QC K1A 0H3, Canada; Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, United States; The University of Western Australia Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia; Agriculture and Agri-Food Canada, Swift Current Research and Development Centre, Swift Current, SK S9H 3X2, Canada
推荐引用方式 GB/T 7714	Chai Q.,Nemecek T.,Liang C.,et al. Integrated farming with intercropping increases food production while reducing environmental footprint[J],2021,118(38).
APA	Chai Q..,Nemecek T..,Liang C..,Zhao C..,Yu A..,...&Gan Y..(2021).Integrated farming with intercropping increases food production while reducing environmental footprint.Proceedings of the National Academy of Sciences of the United States of America,118(38).
MLA	Chai Q.,et al."Integrated farming with intercropping increases food production while reducing environmental footprint".Proceedings of the National Academy of Sciences of the United States of America 118.38(2021).