气候变化领域集成服务门户(CCPortal): Reducing China's fertilizer use by increasing farm size

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DOI	10.1016/j.gloenvcha.2016.08.005
	Reducing China's fertilizer use by increasing farm size
	Ju X.; Gu B.; Wu Y.; Galloway J.N.
发表日期	2016
ISSN	0959-3780
卷号	41
英文摘要	The excessive use of fertilizer has resulted in serious environmental degradation and a high health cost in China. Much research has focused on the technological innovation to improve fertilizer use efficiency in crop production, but the socioeconomic constraints are at present poorly understood. Here, we find that fertilizer use on a per-area basis sharply decreased with the increase of farm size; surprisingly, the crop yield is higher in large-scale farms compared to that in smallholder farms in China. High labor cost suggests a low machinery level in smallholder farms, which inhibit the application of precise fertilization technologies and management based on scientific knowledge. Meanwhile, the dependence of income from cropland is lower for smallholder farmers who have part-time jobs in urban areas compared to the professional farmers in large-scale farms. Therefore, compared to smallholder farms, large-scale farms are generally more sensitive to the increase of fertilizer price and would reduce their fertilizer use if withdrawing fertilizer subsidies that used to be considered as the key driver of fertilizer overuse. Considering the dominance of smallholder farms in China, increasing farm size should be integrated into the actions such as improving technological innovation and providing better information transfer to achieve the goal of no increase in Chinese fertilizer use. © 2016 Elsevier Ltd
英文关键词	Cost effective; Fertilizer subsidy; Food security; Labor input; Smallholder; Zero increase plan
学科领域	agricultural labor; agricultural management; cost analysis; crop production; crop yield; environmental degradation; environmental planning; farm size; fertilizer application; food security; innovation; smallholder; subsidy system; China
语种	英语
scopus关键词	agricultural labor; agricultural management; cost analysis; crop production; crop yield; environmental degradation; environmental planning; farm size; fertilizer application; food security; innovation; smallholder; subsidy system; China
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117323
作者单位	College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Department of Land Management, Zhejiang University, Hangzhou, 310058, China; Policy Simulation Laboratory, Zhejiang University, Hangzhou, 310058, China; Department of Environmental Sciences, University of Virginia, Charlottesville, 22904, United States
推荐引用方式 GB/T 7714	Ju X.,Gu B.,Wu Y.,et al. Reducing China's fertilizer use by increasing farm size[J],2016,41.
APA	Ju X.,Gu B.,Wu Y.,&Galloway J.N..(2016).Reducing China's fertilizer use by increasing farm size.Global Environmental Change,41.
MLA	Ju X.,et al."Reducing China's fertilizer use by increasing farm size".Global Environmental Change 41(2016).