Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s40333-017-0017-3 |
Responses of water productivity to irrigation and N supply for hybrid maize seed production in an arid region of Northwest China | |
Ran Hui1; Kang Shaozhong1; Li Fusheng2; Du Taisheng1; Ding Risheng1; Li Sien1; Tong Ling1 | |
通讯作者 | Tong Ling |
来源期刊 | JOURNAL OF ARID LAND |
ISSN | 1674-6767 |
EISSN | 2194-7783 |
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 (WPY-ET) and final biomass (WPB-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 WPY-ET and WPB-ET to different irrigation amounts were different. WPY-ET was significantly reduced by lowering irrigation amounts while WPB-ET stayed relatively insensitive to irrigation amounts. However, WPY-ET and WPB-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 WPY-ET and WP (B-ET) , however, when reducing N input to 100 kg/hm(2), the values of WPY-ET and WPB-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, WPY-ET linearly increased and WP (B-ET) decreased. Taking the indices of Y, B, WPY-ET , WPB-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 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000404664400003 |
WOS关键词 | DEFICIT IRRIGATION ; USE EFFICIENCY ; YIELD RESPONSE ; FOOD SECURITY ; MEDITERRANEAN ENVIRONMENT ; SUSTAINABLE WATER ; OPTIMIZING WATER ; NITROGEN USE ; CORN ; STRESS |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 中国农业大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200183 |
作者单位 | 1.China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China; 2.Guangxi Univ, Coll Agr, Nanning 530005, Guangxi, Peoples R 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]. 中国农业大学,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. |
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