| 仵峰,楚运旺,宰松梅,王富斌,刘生东.秸秆复合管水力性能初探[J].干旱地区农业研究,2020,38(2):51~57 |
| 秸秆复合管水力性能初探 |
| Preliminary study on hydraulic performance of straw composite pipe |
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| DOI：10.7606/j.issn.1000-7601.2020.02.07 |
| 中文关键词: 秸秆复合管 制备 出流量 入渗速率 均匀度 |
| 英文关键词:straw composite pipe (SCP) preparation flow rate infiltration rate uniformity |
| 基金项目:国家自然科学基金资助项目（51979108）；中原科技创新领军人才计划资助项目（194200510008） |
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| 中文摘要: |
| 简述了秸秆复合管的制作方法，进行了秸秆复合管地下灌溉田间测试，研究了秸秆复合管地埋后的灌水效果。试验以秸秆复合管的秸秆掺量和管长为主要因素，分析了出流量、入渗速率和灌水均匀度等灌水指标。结果表明：在秸秆掺量为5%、7%、9%水平下，管长为3.5 m的秸秆复合管单位长度累计出流量比管长为1.0 m的秸秆复合管分别高出71.66%、77.52%、8.14%，灌水均匀度分别减小3.60%、5.45%、13.72%。在管长为1.0 m和3.5 m水平下，秸秆掺量为7%和9%的秸秆复合管单位长度累计出流量分别比秸秆掺量为5%时减少了12.60%、15.80%和9.09%、18.70%。秸秆掺量为7%时，不同管长的秸秆复合管入渗速率的波动程度最小，出水性能相对稳定。秸秆掺量为7%时，管长为1.0 m秸秆复合管的灌水均匀度达到85.00%，秸秆掺量为5%时，管长为3.5 m秸秆复合管的灌水均匀度达到81.38%。综合考虑出流量、入渗速率、均匀度等试验指标，认为秸秆复合管具备作为灌水毛管用于田间灌溉的条件，秸秆掺量在5%~7%时，秸秆复合管的水力性能最优。 |
| 英文摘要: |
| A new type of irrigation pipe named straw composite pipe (SCP)was developed.The manufacturing method of SCP was introduced, and the field test of subsurface irrigation using SCP was carried out to study the irrigation effect of SCP after it was implemented underground.In the experiment, the main factors were the straw content and the length of SCP, and the irrigation indexes such as accumulated flow rate, infiltration rate, and uniformity of irrigation were analyzed.Results showed that at the levels of straw content of 5%, 7%, and 9%, the accumulated flow rateper unit length of SCP with a length of 3.5 m was 71.66%, 77.52%, and 8.14% higher than that of SCP with a length of 1.0 m, the irrigation uniformity of SCP with a length of 3.5 m was 3.60%, 5.45%, and 13.72% lower than that of SCP with a length of 1.0 m,respectively. With tube lengths of 1.0 m and 3.5 m, the cumulative flow rate per unit length of a SCP with a straw content at 7% and 9% decreased by 12.60%, 15.80%, and 9.09%, 18.70%, respectively, compared with that of the straw content of 5%.When the straw content was 7%, the fluctuation of infiltration rate of the two tube lengths of SCP was the smallest, and the water discharge performance was relatively stable. When the content of straw was 7%, the uniformity of irrigation of SCP with a length of 1.0 m reached 85.00%, and when the content of straw was 5%, the uniformity of irrigation of SCP with a length of 3.5 m reached 81.38%. The test indexes of accumulated flow rate, infiltration rate, and uniformity were considered, it was showed that SCP had the condition of being used as irrigation capillary for field irrigation. When the straw content was 5%~7%, the hydraulic performance of SCP was the best. |
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