干旱区生态环境知识资源中心(Arid): Responses of water productivity to irrigation and N supply for hybrid maize seed production in an arid region of Northwest China

Arid

	Responses of water productivity to irrigation and N supply for hybrid maize seed production in an arid region of Northwest China
	Ran Hui; Kang Shaozhong; Li Fusheng; Du Taisheng; Ding Risheng; Li Sien; Tong Ling
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2017
卷号	9 期号:4 页码:504-514
英文摘要	Water and nitrogen (N) are generally two of the most important factors in determining the crop productivity. Proper water and N managements are prerequisites for agriculture sustainable development in arid areas. Field experiments were conducted to study the responses of water productivity for crop yield (WP_(Y-ET)) and final biomass (WP_(B-ET)) of film-mulched hybrid maize seed production to different irrigation and N treatments in the Hexi Corridor, Northwest China during April to September in 2013 and also during April to September in 2014. Three irrigation levels (70%-65%, 60%-55%, and 50%-45% of the field capacity) combined with three N rates (500, 400, and 300 kg N/hm~2) were tested in 2013. The N treatments were adjusted to 500, 300, and 100 kg N/hm~2 in 2014. Results showed that the responses of WP_(Y-ET) and WP_(B-ET) to different irrigation amounts were different. WP_(Y-ET) was significantly reduced by lowering irrigation amounts while WP_(B-ET) stayed relatively insensitive to irrigation amounts. However, WP_(Y-ET) and WP_(B-ET) behaved consistently when subjected to different N treatments. There was a slight effect of reducing N input from 500 to 300 kg/hm~2 on the WP_(Y-ET) and WP_(B-ET), however, when reducing N input to 100 kg/hm~2, the values of WP_(Y-ET) and WP_(B-ET) were significantly reduced. Water is the primary factor and N is the secondary factor in determining both yield (Y) and final biomass (B). Partial factor productivity from applied N (PFPN) was the maximum under the higher irrigation level and in lower N rate (100-300 kg N/hm~2) in both years (2013 and 2014). Lowering the irrigation amount significantly reduced evapotranspiration (ET), but ET did not vary with different N rates (100-500 kg N/hm~2). Both Y and B had robust linear relationships with ET, but the correlation between B and ET (R~2=0.8588) was much better than that between Y and ET (R~2=0.6062). When ET increased, WP_(Y-ET) linearly increased and WP_(B-ET) decreased. Taking the indices of Y, B, WP_(Y-ET), WP_(B-ET) and PFPN into account, a higher irrigation level (70%-65% of the field capacity) and a lower N rate (100-300 kg N/hm~2) are recommended to be a proper irrigation and N application strategy for plastic film-mulched hybrid maize seed production in arid Northwest China.
英文关键词	water use efficiency water stress nitrogen use efficiency evapotranspiration water productivity for yield water productivity for biomass arid region
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6020588
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335827
作者单位	Ran Hui, Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.; Kang Shaozhong, Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.; Du Taisheng, Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.; Ding Risheng, Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.; Li Sien, Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.; Tong Ling, Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.; Li Fusheng, College of Agriculture, Guangxi University, Nanning, Guangxi 530005, China.
推荐引用方式 GB/T 7714	Ran Hui,Kang Shaozhong,Li Fusheng,et al. Responses of water productivity to irrigation and N supply for hybrid maize seed production in an arid region of Northwest China[J],2017,9(4):504-514.
APA	Ran Hui.,Kang Shaozhong.,Li Fusheng.,Du Taisheng.,Ding Risheng.,...&Tong Ling.(2017).Responses of water productivity to irrigation and N supply for hybrid maize seed production in an arid region of Northwest China.Journal of Arid Land,9(4),504-514.
MLA	Ran Hui,et al."Responses of water productivity to irrigation and N supply for hybrid maize seed production in an arid region of Northwest China".Journal of Arid Land 9.4(2017):504-514.