干旱区生态环境知识资源中心(Arid): 基于DSSAT模型陕西杨凌不同降水年型冬小麦灌溉制度研究

Arid

	基于DSSAT模型陕西杨凌不同降水年型冬小麦灌溉制度研究
其他题名	Determination of irrigation schedule of winter wheat in different hydrological years in Yangling,Shaanxi Province based on DSSAT model
	王文佳 1; 冯浩 2; 宋献方 1
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2013
卷号	31 期号:4 页码:1-10,37
中文摘要	基于DSSAT作物模型模拟了不同降水年型水分胁迫条件下的冬小麦生产潜力,对比分析不同生育期灌水对产量、WUE以及土壤蒸发量等的影响,从而确定关键灌水期;并在综合考虑产量、WUE、总灌水量、灌水次数等因素的基础上确定了不同降水年型下的最优灌溉制度。结果表明:(1)冬小麦越冬水、返青水、拔节水、灌浆水四水中以返青水最为关键,其次为拔节水,最后为越冬水和灌浆水;当不灌返青水时,冬小麦产量和蒸腾量显著降低,土壤蒸发量显著升高;(2)不同降水年型之间也存在显著差异,产量、WUE、作物蒸腾量等表现为丰水年略大于平水年,二者显著大于枯水年;而灌水边际效益表现为平水年>枯水年>丰水年;(3)枯水年、平水年、丰水年的冬小麦最优灌溉制度分别为枯水年返青期和拔节期各灌水75mm和50mm,平水年返青期灌水75mm,丰水年返青期和拔节期各灌水25mm。
英文摘要	In the arid and semiarid areas of northwest China, the land, light and heat resources are relatively rich but water resource is much short. Water is the main limiting factor in exploring the productive potential of light and tem-perature in these areas. In order to realize highly efficient agricultural production and sustainable development, it is es-sential to raise the use efficiency of water resource according to the water requirement and water-stress response of crops in different growing stages. By using DSSAT model, the productive potential of winter wheat in different hydrological years in Yangling, Shaanxi Province was simulated, the effects of irrigation in different stages on yield, WUE and soil e-vaporation were analyzed, and the key irrigation periods were determined. Furthermore, the optimal irrigation schedule of winter wheat in different hydrological years was made by considering yield, WUE, total irrigation amount and irrigation times comprehensively. The results showed :(1) Among the four times of irrigation during the growing period of winter wheat, revival water was most critical, next was jointing water, and winter water and grain filling water were the last. When there was no revival water, the yield and transpiration of winter wheat were decreased significantly, and the soil e-vaporation was increased significantly. (2) There were also remarkable differences among different hydrological years. The yield, WUE and crop transpiration in wet years were slightly higher than those in normal years, and both of them were significantly higher than those in dry years. As for the marginal benefit of irrigation, different hydrological years were ranked as :normal years>dry years>wet years. (3) The optimal irrigation schedule of winter wheat in different hy-drological years was :75 mm of revival water and 50 mm of jointing water in dry years, 75 mm of revival water in normal years, and 25 mm of revival water and 25 mm of jointing water in wet years.
中文关键词	DSSAT模型 ; 节水灌溉 ; 冬小麦 ; 关中地区
英文关键词	DSSAT model water-saving irrigation winter wheat Central Shaanxi
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:4901042
来源机构	中国科学院地理科学与资源研究所 ; 中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229485
作者单位	1.中国科学院地理科学与资源研究所, 中国科学院陆地水循环及地表过程重点实验室, 北京 100101, 中国; 2.中国科学院水利部水土保持研究所, 旱区农业水土工程教育部重点实验室, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	王文佳,冯浩,宋献方. 基于DSSAT模型陕西杨凌不同降水年型冬小麦灌溉制度研究[J]. 中国科学院地理科学与资源研究所, 中国科学院水利部水土保持研究所,2013,31(4):1-10,37.
APA	王文佳,冯浩,&宋献方.(2013).基于DSSAT模型陕西杨凌不同降水年型冬小麦灌溉制度研究.干旱地区农业研究,31(4),1-10,37.
MLA	王文佳,et al."基于DSSAT模型陕西杨凌不同降水年型冬小麦灌溉制度研究".干旱地区农业研究 31.4(2013):1-10,37.