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为了检验E601蒸发皿法和质量法的适用性及基于环境参数的大棚水果黄瓜的需水量模型,通过田间试验采用时域反射仪(TDR)法、E601蒸发皿法和质量法3种不同的方式测定大棚水果黄瓜需水量,并且同步监测大棚内外的环境参数.对比时域反射仪(TDR)法、E601蒸发皿法和质量法测定的大棚水果黄瓜需水量,以TDR值为准进行精度分析,E601法的中误差为0.91 mm,质量法的中误差为0.94 mm;分析TDR值与同步监测的大棚内温度值的相关性,建立室温需水量模型和地温需水量模型,其中误差分别为0.35 mm、0.71 mm.研究成果对大棚水果黄瓜需水量计算以及灌溉管理和灌溉系统设计有一定的参考作用.
In order to test the applicability of the E601 evaporating dish method and the quality method and the water requirement model of greenhouse cucumber based on the environmental parameters, the field experiments were conducted using the time domain reflectometer (TDR) method, the E601 evaporating dish method and the mass method The cucumber cucumber water requirement was measured and the environmental parameters inside and outside the greenhouse were monitored simultaneously.Comparing the TDR method, the E601 evaporating dish method and the water quality cucumber cucumber water quality method, The error of E601 method was 0.91 mm, and the error of mass method was 0.94 mm. The correlation between TDR value and temperature in greenhouse monitored simultaneously was analyzed. The model of room temperature water demand and ground water demand were established with the error of 0.35 mm , 0.71 mm.The results of this study can be used as a reference for the calculation of water requirement of cucumber in greenhouse and the design of irrigation management and irrigation system.