南方低山丘陵区滴灌葡萄蒸发蒸腾量实时预报  

Real-time Forecast of Grape Evapotranspiration under Drip Irrigation in Hilly Region of Southern China

作　　者：吕成长 谭君位[2] 陈苏春 崔远来[2] 

机构地区：[1]浙江省永康市农村水利管理站,浙江永康321300 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《灌溉排水学报》2012年第5期47-52,共6页Journal of Irrigation and Drainage

摘　　要：以浙江低山丘陵区永康灌溉试验站为背景,运用Penman-Monteith公式计算分析了永康长系列参考作物腾发量ET0及其变化规律,建立了ET0实时预报模型,并分析了参数A0取值方法对预报精度的影响。采用双作物系数法确定了滴灌葡萄逐日作物系数,建立了滴灌葡萄蒸发蒸腾量实时预报模型。运用实测的土壤含水率资料,根据水量平衡原理分析计算葡萄实际蒸发蒸腾量,与模型的预报值比较表明所建立的模型及其参数合理。Based on long series of meteorological data from Yongkang irrigation experimental station,which represented typical hilly region of southern China,long time of ET0（reference crop evapotranspiration） were calculated by Penman-Monteith equation.According to the variation,ET0 real-time forecast model was established,and how did A0 impact the model＇s precision was analyzed.Dual crop-coefficient method was applied in determining grape＇s daily Kc under drip irrigation.Based on daily Kc and forecast of ET0,daily ETc forecast model of grape under drip irrigation was presented.The ETc forecast model was validated by actual evapotranspiration data which calculated by water balance theory with the measured soil moisture.Validated results showed that the ETc forecast model and its parameters were feasible in use.

关 键 词：实时预报 作物系数 参考作物腾发量 蒸发蒸腾量 

分 类 号：S663.1[农业科学—果树学]