【摘要】 水分生产函数模型用以描述作物产量与水分因子之间的数学关系。确定合适的作物水分生产函数模型对建立与完善节水灌溉系统具有十分重要的意义。选常用的Jensen、Minhas、Blank、Stewart及Singh模型,依据在吉林省松原市前郭县草原管理站进行的苜蓿非充分灌溉试验中所获得的资料,采用多元回归分析方法求出各模型的参数,并对这5种模型进行了对比和筛选,得出了Jensen模型是最适宜于吉林省松原地区苜蓿的水分生产函数模型的结论。还探讨了Jensen模型水分敏感指数在苜蓿全生育期的变化规律,并指出了其在实践应用中的意义。更多还原

【Abstract】 Water production function model is used to express the mathematic relation between crop production and water factor.Suitable water production function model of crop is important for founding and developing water-saving irrigation system.According to the data of Lucerne deficient irrigation experiment,which is conducted in the grassland management station of QianGuo County of SongYuan City in Jilin Province,the parameters of five models,namely Jensen model,Minhas model,Blank model,Stewart model and Singh model,are gained through multiple regression analysis.Based on the comparison and filtration among the five models,it is concluded that the Jensen model is the most suitable water production function model for lucerne in SongYuan Region of Jilin Province.Moreover,the changing rule of water sensitive index of Jensen model in the full growing period of Lucerne is discussed and its practical significance is pointed out.更多还原