摘要
利用甘肃省西峰市的气象、土壤湿度、作物发育期和产量资料，通过水量平衡方程计算冬小麦在各生育阶段的耗水量，揭示了该地区冬小麦的耗水规律、土壤湿度变化规律和水分亏缺状况。通过回归模拟建立产量－耗水量模型，确定影响产量的水分关键期。
In this paper, water consumption was estimated for winter wheat based on water balance equation. Data used for the estimation are meteorological elements, soil moisture, phenological dates and yield, coming from Xifeng Agrometeorological Experimental Station, Gansu Province. Regular patterns both of the water consumption for winter wheat and of soil moisture change were brought to light and water deficiency was analyzed with respect to its amount and temporal distribution. A yield water consumption model was established for winter wheat through regression modelling and the critical water period of its yield formation was defined for the area.
出处
《南京气象学院学报》
CSCD
1999年第1期88-94,共7页
Journal of Nanjing Institute of Meteorology
基金
江苏省"青蓝工程"资助项目
中国气象局青年气象基金
关键词
冬小麦
水分消耗
产量
耗水量模型
winter wheat
water consumption
yield water consumption model
