微灌系统综合流量偏差率的计算方法

在分析目前水力偏差率以及流量偏差率计算方法的基础上，提出并定义了地面偏差率，确定了地面偏差率的计算方法，并对原有灌水器制造偏差率进行了重新定义；综合考虑制造偏差、水力偏差和地面偏差，分别推导出了不同偏差影响下的流量偏差率计算公式，并推导出了综合流量偏差率和极限综合流量偏差率的计算方法。研究结果为更准确设计微灌系统工程提供技术指导，使微灌系统实际运行指标与系统设计指标保持一致。

Method for calculating integrated flux deviation rate of micro-irrigation system

At first, based on analyzing the actual calculation method of the hydraulic deviation rate and flux deviation rate, the ground deviation was presented and defined, the calculation method was set up, and the manufacture deviation rate of the drip douche was redefined. Second, taking into account comprehensively the manufacture deviation, the hydraulic deviation and the ground deviation, the authors deduces respectively the formula for calculating the flux deviation rate based on the influence of different deviations, and deduces the method that is used to calculate the integrated flux deviation rate and ultimate integrated flux deviation rate. The research results provide the more accurate technological guidance for designing the micro-irrigation system engineering, which is expected to make the practical operational target in good agreement with the designed target of the micro-irrigation system.