【摘要】 在不同的水头压力条件和出水历时条件下,通过实验室内试验和温室内试验,测量节点渗灌管每单节管的出水量,利用均匀度公式,分别按照单节管和单位长度mm计算渗灌管的出水均匀度, 同时考虑管接头部位的粘合与否的区别。试验结果表明,渗灌管总出水量与时间不成线性关系;水箱压力水头对渗灌管出水量影响显著,但对其出水均匀度影响不大;渗灌管按单位长度出水量计算各点源的出水均匀度明显高于按单节出水量计算各点源的出水均匀度;等等。更多还原

【Abstract】 Under different water head pressure and lasting time, makes tests inlaboratory and in greenhouse , measures the water flow rate each node of permeationirrigation pipeline, utilizes formulae to calculate uniformity of water flow accordingto single part tube and unit length mm separately. At the same time ,considers theinfluence of gluing factors .The result of the test shows that water flow ofpermeation irrigation pipe and time are not linear relations, the influence ofpressure water head to water flow is remarkable. However, its impact on the uniformityis not big, the uniformity of each point source water flow per meter of permeationirrigation pipeline is obviously higher than that of per joint of the pipeline, etc.更多还原