【摘要】 针对不同水分处理对冬小麦产量和耗水特性的影响,在大田生产条件下对冬小麦进行了非充分灌溉试验,以冬小麦大田试验数据为基础,采用最小二乘法拟合了冬小麦水分生产函数;通过耗水资料的分析整理,揭示了冬小麦的水分效应及耗水规律;依据动态规划原理,建立了冬小麦最优灌溉制度动态模型,提出了两种水文年型(50%和75%)的冬小麦节水灌溉模式,对北方冬麦区田间管理具有一定的指导意义。更多还原

【Abstract】 A field non-full irrigation experiment was carried out to investigate the effects of different water supplies on the winter wheat yield and water consumption characteristics at different growth stages in winter wheat growing season under field production condition. Based on the experimental data of winter wheat in the fields, the water production function of winter wheat is fitted with least square method. Both the water use effect and the rule of water consumption are disclosed through the analysis of water consumption data. According to the principle of dynamic planning, the dynamic model for optimal irrigation schedule is developed. The best irrigation pattern of two different hydrological years (50% and 75%) is presented, which provides references for field practice in North China Plain.更多还原