河套灌区春小麦与向日葵套种模式下水分利用效率评估  

Water Use Efficiency Evaluation of Wheat Intercropping Sunflowers in the Hetao Irrigation District

作　　者：朱敏[1] 史海滨[1] 郑和祥[1] 程满金 王长生 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018 [2]内蒙古水利科学研究院,呼和浩特010020 [3]内蒙古河套灌区解放闸灌域沙壕渠试验,巴彦淖尔015400

出　　处：《中国农村水利水电》2010年第4期122-124,128,共4页China Rural Water and Hydropower

基　　金："十一五"国家科技支撑计划重点项目(2006BAD11B09-1)

摘　　要：以河套灌区春小麦套种向日葵田间实测资料为基础,讨论了灌水与小麦套种向日葵总产量的关系,根据实测数据,拟合了春小麦套种向日葵水分生产函数模型,通过对耗水资料的分析整理,揭示了春小麦与向日葵套种模式下需水规律及水分利用效率。通过对河套灌区春小麦套种向日葵水分生产函数及灌水边际效益的分析表明,水资源投入的最佳效益点并非产量最高点和水分利用效率的最高点。合理利用小麦套种向日葵水分生产函数及其规律,可以实现小麦套种向日葵节水、高产、高效的较好统一。Based on the data obtained in wheat intercropping sunflower field,this paper discusses the relations between the irrigation and crop production of wheat intercropping sunflower.In accordance with the data available and the principle of least squares method,the model of water production function is fitted.Through an analysis of water consumption data,this paper reveals water use efficiency and water requirement discipline.Through the water production function and irrigation marginal benefit analysis of wheat intercropping sunflowers,this paper shows that the best efficiency point of water resources input is not the highest point of water use efficiency and crop production.The rational use of water production function and law of wheat intercropping sunfloweer can realize water-saving,,,high yield and high efficiency of wheat intercropping sunflower.

关 键 词：小麦向日葵套种 水分生产函数 水分利用效率 灌水效益 

分 类 号：S274.1[农业科学—农业水土工程]