中文摘要：

利用室内实测气象数据,根据P-M公式计算参考作物需水量,采用时域反射仪（TDR）测定逐日土壤含水率,再根据水量平衡法计算实测作物需水量,然后计算作物系数。对温室作物系数进行修正,建立基于温室作物修正系数的日光温室膜下滴灌作物需水量计算模型,并对模型进行检验。结果表明,修正后的作物系数具有较好的适应性,模型预测值与实测值较为一致,平均相对误差绝对值为8.24%。

英文摘要：

Using indoor meteorological data, the reference crop water requirement was calculated according to P-M formula; diurnal soil water contents were measured by TDR, the actual crop water requirements were calculated based on the water balance method, and crop coefficients were calculated. The greenhouse crop coefficients were amended, and a prediction model of crop water requirement in sunlight greenhouse was build based on the amended greenhouse crop coefficients. Finally, the established model was verified using the measured data at the same period. Test results showed that the amended crop coefficient had a betteradaptability; the predicted data and measured data were consistent with the average absolute value of the relative error being 8.24 %.