干旱区生态环境知识资源中心(Arid): 辽宁省玉米地水分盈亏时空分布特征及灌溉模式分区研究

Arid

	辽宁省玉米地水分盈亏时空分布特征及灌溉模式分区研究
其他题名	Temporal and spatial distribution characteristics of maize water surplus deficit and irrigation mode partition in Liaoning province
	魏新光 1; 王铁良 1; 李波 1; 刘守阳 2; 姚名泽 1; 解影 1; 郑思宇 1; 景竹然 1
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2018
卷号	34 期号:23 页码:119-126
中文摘要	根据不同区域农作物需水规律和水资源供需状况,对区域内干旱区域类型、水分盈亏特性与干旱发生频率等进行综合分析和科学区划,对于提高整个地区(流域)农作物水分利用效率和水资源高效利用具有重要意义。该文基于辽宁省27个气象站19552014年逐日气象数据和玉米生长发育资料,对辽宁省不同玉米种植区域玉米生育期的需水过程、需水量、灌溉需水量、水分盈亏指数(crop water surplus deficit index,CWSDI)、干旱发生频率等的时空分布特征进行深入研究,得到以下结论:辽宁省不同区域玉米逐月需水量均呈现单峰变化趋势,7月需水量最大,全省生育期总需水量在335~391 mm之间;不同水文年玉米需水亏缺量在0~220 mm之间;CWSDI和干旱发生频率在全省的空间分布规律类似,综合两指标的数值分布特征,将辽宁省玉米灌区划分为干旱区和易旱区2种类型,并结合不同水文年型玉米灌溉制度,将辽宁省玉米种植区划分为7种灌溉模式。该研究成果可以为辽宁省区域农业用水区划与管理提供理论依据。
英文摘要	It is necessary to formulate a partition irrigation management mode based on the feature of water resource and meteorology of different sub areas in a large area.Maize is the main crop and major agricultural water consumer in Liaoning province.The objective of this study was to analyze the temporal and spatial distribution characteristics of maize water surplus deficit and lay out an irrigation mode partition scheme in Liaoning province.We collected the data of maize growth index,irrigation,and daily meteorological data from 1955 to 2014 in 27 agricultural meteorological stations in Liaoning province.The calculated index included evapotranspiration (ET),irrigation requirement,crop water surplus and deficit index (CWSDI)､ the drought probability during the maize growth stage in Liaoning.The results showed that:the ET during the growth stage of maize varied in a single peak style in all the regions of Liaoning.The ET in western Liaoning was the highest in Liaoning,and the monthly ET of the western Liaoning was more than 140 mm in July.The high value of ET mainly appeared in the western region (ET≥380 mm).The ET was lower in the central and southern regions in Liaoning.The minimum value of ET was in the southern Liaoning,which was less than 345 mm.The standard deviation of ET were higher in the central and southern Liaoning around the Bohai sea (SD>15 mm),but it were stable in eastern and western Liaoning (SD<8 mm).A total of 4 typically deficient irrigation schedule were recommended and the irrigation norm in different hydrological years were 40,80,120 and 135 mm,respectively for the wet year,the normal year,the dry year and the drought year.In most years,CWSDI of maize were above 0 in the eastern Liaoning,and the peak was above 2.5 (in the year of 1985).It indicates that the crop water supply exceeded demand in most of years.It was significantly different between the western and eastern Liaoning.In the western Liaoning,the most of the CWSDI was below 0,and sometimes even below -0.14.There was a widespread mild dry in most of the years,sometimes was dry even drought in this region.The spatial distribution of the dry frequency indicated that,in addition to the southeast Liaoning,the most regions may become mild dry,dry or drought,most especially in the western Liaoning.In the northwest Liaoning,the frequency of mild drought occurrence was high.The dry mainly appeared in the western Liaoning.The CWSDI and the dry frequency had the similar spatial distribution pattern.The area with mild dry frequency not less than 0.45,dry frequency not less than 0.28,the drought frequency not less than 0.12 and CWSDI higher than 0 was same.Thus,we defined the area meeting one of the conditions above as the arid area.Those areas were in the western and northern Liaoning where the water resource supply was less than demand and the dry condition appeared very often.We defined the area with mild dry frequency not less than 0.1 or CWSDI higher than 0.45 as the drouht-prone area.These areas were in the northern Liaoning,middle Liaoning and the west of eastern Liaoning.Based on the CWSDI and dry frequency,a total of 7 irrigation modes were set up.A total of 6,4,3 and 1 irrigation mode were for the drought,dry,normal and wet year,respectively.The study would improve not only the areas water resource utilization but also food security.
中文关键词	需水量 ; 灌溉 ; 干旱 ; 作物水分盈亏指数 ; 玉米
英文关键词	evapotranspiration irrigation drought CWSDI maize
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:6367378
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237998
作者单位	1.沈阳农业大学水利学院, 沈阳, 辽宁 110866, 中国; 2.法国国家农业科学研究院地中海气候与农业水文过程模拟实验室, 阿维尼翁, 453003
推荐引用方式 GB/T 7714	魏新光,王铁良,李波,等. 辽宁省玉米地水分盈亏时空分布特征及灌溉模式分区研究[J],2018,34(23):119-126.
APA	魏新光.,王铁良.,李波.,刘守阳.,姚名泽.,...&景竹然.(2018).辽宁省玉米地水分盈亏时空分布特征及灌溉模式分区研究.农业工程学报,34(23),119-126.
MLA	魏新光,et al."辽宁省玉米地水分盈亏时空分布特征及灌溉模式分区研究".农业工程学报 34.23(2018):119-126.