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	Analysis of potential of grain yield increase under film-mulching condition on a county scale
	Chen Baiming
	2005
英文摘要	According to the total amount of plastic film consumption and grain yields and total sown area of wheat, corn and rice from 1999 to 2001 in each county of China, the regional differences in film-mulching rate and potential of grain yield increase by plastic films application were computed and analyzed. Results of the study were concluded as follows; First, the film-mulching rate in most of the counties varied from 1% to 10%; The potential of grain yield increase per sowing area in most counties varied from 500 kg/hm2 to 1500 kg/hm2. Second, the spatial difference of the film-mulching rate and potential of grain yield increase is distinct, the counties with the relatively low film-mulching rate and relatively high potential of grain yield increase centre in Eastern and Central Regions of China mainly. It is concluded that more plastic films should be used in the Eastern and Central Regions to improve China grain productivity. Finally, under the rational hypothesis of the increase of film-mulching rate, the potential of grain yield increase of the whole country was estimated.
出处	Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
卷	21期:11页:146-149
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24530]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Chen Baiming. Analysis of potential of grain yield increase under film-mulching condition on a county scale. 2005.

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