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Different Irrigation Water Requirements of Seed Corn and Field Corn in the Heihe River Basin
Tan, Minghong1,2; Zheng, Luqian1,3
2017-08-01
Source PublicationWATER
ISSN2073-4441
Volume9Issue:8Pages:11
Corresponding AuthorTan, Minghong(tanmh@igsnrr.ac.cn)
AbstractThe Heihe River is the second largest river in arid areas of China, and the irrigation water of oasis agriculture in its middle reaches accounts for almost 80% of the water resources in the whole watershed. Corn is the most important crop in the middle reaches of the Heihe River, and its water consumption is about 50% of the total agriculture water consumption of the middle reaches. Therefore, in order to effectively use the water resources in the watershed, it is crucial to improve the efficiency of corn irrigation. In this paper, using the Ganzhou District in the middle reaches of the Heihe River as the study region, we carried out a field survey to obtain characteristics of seed and field corn. Based on our results, we conducted parameter calibration using the CROPWAT model and calculated the irrigation water requirements (IWR) of these two corn types. The irrigation water requirements of seed and field corn in the growing seasons were 470.1 and 488.5 mm, respectively. However, we observed big differences in the water consumption sequences of these two corn types. Prior to mid-July, evapotranspiration and IWR of seed corn were 14.3% and 20.1% higher, respectively, than those of field corn. In September, IWR of the two corn types started to decrease, with a value of 82.3 mm for seed corn, which was 32.1% lower than the IWR of field corn (108.7 mm) during the same period. However, there were no significant differences in the irrigation time and single irrigation amount for seed and field corn in the study area. Since corn is widely cultivated in the Zhangye Region, there is a considerable water-saving potential in agriculture if the irrigation water consumption can be adjusted according to the IWR of the two corn types.
KeywordHeihe River basin seed corn field corn irrigation water requirement
DOI10.3390/w9080606
WOS KeywordENERGY-BALANCE CLOSURE ; EDDY-COVARIANCE ; NORTHWEST CHINA ; MIDDLE REACHES ; BOWEN-RATIO ; EVAPOTRANSPIRATION ; PRODUCTIVITY ; MODEL ; LAND
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[91325302]
Funding OrganizationNatural Science Foundation of China
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000408729200052
PublisherMDPI AG
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61624
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTan, Minghong
Affiliation1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Int Coll, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Tan, Minghong,Zheng, Luqian. Different Irrigation Water Requirements of Seed Corn and Field Corn in the Heihe River Basin[J]. WATER,2017,9(8):11.
APA Tan, Minghong,&Zheng, Luqian.(2017).Different Irrigation Water Requirements of Seed Corn and Field Corn in the Heihe River Basin.WATER,9(8),11.
MLA Tan, Minghong,et al."Different Irrigation Water Requirements of Seed Corn and Field Corn in the Heihe River Basin".WATER 9.8(2017):11.
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