Different Irrigation Water Requirements of Seed Corn and Field Corn in the Heihe River Basin

doi:10.3390/w9080606

	Different Irrigation Water Requirements of Seed Corn and Field Corn in the Heihe River Basin
	Tan, Minghong 1,2; Zheng, Luqian 1,3
刊名	WATER
	2017-08-01
卷号	9 期号:8 页码:11
关键词	Heihe River basin seed corn field corn irrigation water requirement
ISSN号	2073-4441
DOI	10.3390/w9080606
通讯作者	Tan, Minghong(tanmh@igsnrr.ac.cn)
英文摘要	The 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.
资助项目	Natural Science Foundation of China[91325302]
WOS关键词	ENERGY-BALANCE CLOSURE ; EDDY-COVARIANCE ; NORTHWEST CHINA ; MIDDLE REACHES ; BOWEN-RATIO ; EVAPOTRANSPIRATION ; PRODUCTIVITY ; MODEL ; LAND
WOS研究方向	Water Resources
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000408729200052
资助机构	Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/61623]
专题	中国科学院地理科学与资源研究所
通讯作者	Tan, Minghong
作者单位	1.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
推荐引用方式 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.