作　　者： ; ; ; ; ;

机构地区： 华南农业大学工程学院

出　　处： 《农业工程学报》 2003年第5期47-50,共4页

摘　　要： 以柳叶菜心为研究对象 ,测试了不同干旱条件下的土壤含水量、空气温湿度和冠层温度等参数 ,确定了作物缺水指数经验模型的参数 ,并针对太阳辐射强度对模型做了改进。研制了蔬菜旱情检测系统 ,利用红外测温仪、土壤含水量传感器等 ,可以实时测得田间作物的水分亏缺状态 ,为同类研究提供了测试手段和数据分析方法。 In this paper canopy temperature was measured with an infrared thermometer, air temperature, dry and wet-bulb temperature, and soil water content were measured as well to establish the model for determining the CWSI(crop water stress index) of flowering Chinese cabbage. The relationship between canopy-air temperature difference and vapor pressure deficit was determined. The preliminary model was established with regard to the influence of radiation intensity. A microcomputerized real-time data acquisition system was developed to monitor water-stress status for scheduling irrigation of vegetables.

关 键 词： 作物缺水指数模型 冠层温度 空气饱和水蒸气压盖 柳叶莱心

领　　域： [农业科学] [农业科学]