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地下滴灌灌水器流量由于受到土壤因素的制约而比地表滴灌流量有所减小,研究土壤物理特性对地下滴灌灌水器流量的影响程度对地下滴灌水力计算与工程设计具有重要的理论和实用价值。文中分别选取灌水器工作压力、土壤容重和土壤初始含水率为因素,采取混合水平均匀设计安排试验方案,将归一化处理后的各因素实测数据进行回归分析,估算各试验因素对地下滴灌灌水器流量的影响程度。结果表明:地下滴灌中工作压力是决定灌水器流量的主要因素,土壤容重和土壤初始含水率对地下滴灌灌水器流量的影响较弱,但在地下滴灌水力计算与工程设计中也不可忽略。
The effect of soil physical characteristics on drip irrigation flow rate in underground drip irrigation is of great theoretical and practical value for the hydraulic calculation and engineering design of underground drip irrigation because the flow rate of underground drip irrigation emitter is lower than that of surface drip irrigation due to the restriction of soil factors. In this paper, the working pressure of emitter, the bulk density of soil and the initial water content of soil were selected as the factors respectively. The experimental scheme was designed and arranged with the uniform mixing level. Regression analysis was made on the measured data of each factor after normalization. The extent of traffic impact. The results show that the working pressure in underground drip irrigation is the main factor to determine the flow of emitter. The influence of soil bulk density and initial soil moisture content on the drip flow of underground drip irrigation is weak, but it can not be neglected in the hydraulic calculation and engineering design of underground drip irrigation.