| 引用本文: | 郭庆,李田田,杨建飞.不同类型滴头在黄河水滴灌条件下的堵塞特征研究[J].灌溉排水学报,2022,():-. |
| guoqing,litiantian,yangjianfei.不同类型滴头在黄河水滴灌条件下的堵塞特征研究[J].灌溉排水学报,2022,():-. |
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| 摘要: |
| 摘 要：【目的】探明黄河水滴灌条件下滴头类型和结构对滴头堵塞特性的影响规律，为引黄灌区滴灌系统滴头选型提供科学依据。【方法】选用不同进口结构（有凸台、无凸台）、不同类型（非补偿片式、非补偿圆柱式和补偿圆柱式）的6种迷宫流道滴头进行短周期间歇性灌水试验，对比分析6种滴头的流量变化规律和堵塞状况。【结果】滴头类型和滴头进水口结构对滴头堵塞具有显著影响（P<0.05），不同类型滴头在灌溉过程中其相对流量均发生了不同程度的下降，其中无凸台结构的补偿圆柱式滴头E4流量下降速率最快，滴头堵塞程度最重，有凸台结构的非补偿圆柱式滴头E6流量下降速率最慢，滴头堵塞程度最轻；滴头进水口凸台结构可有效减缓泥沙颗粒在流道入口处的沉积，减小滴头流量下降速率，降低滴头堵塞率，提升滴头抗堵塞性能，较无凸台结构滴头中抗堵塞性最优的E5滴头相比，有凸台结构的E6滴头相对流量提升了14.81%，滴头堵塞率降低了46.63%。【结论】黄河水滴灌时选择具有进水凸台结构的非补偿圆柱式滴头进行灌溉可有效提高滴灌系统的使用寿命。 |
| 关键词: 黄河水；滴灌；堵塞；进口结构 |
| DOI： |
| 分类号:S275.6 |
| 基金项目:国家自然科学基金(52079112,51679205)；山东省重大科技创新工程项目(2020CXGC010808)；杨凌职业技术学院自然科学基金(ZK21-04) |
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| Research on Clogging Characteristics of Different Types of Drippers Under Drip Irrigation in the Yellow River |
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guoqing1, litiantian2, yangjianfei3
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1.Yangling Vocational and Technical College;2.Northwest A and F University;3.Agriculture and Rural Affairs Bureau of Zhouzhi County
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| Abstract: |
| Abstract:【Objective】To explore the influence law of emitter type and structure on emitter clogging characteristics under the condition of drip irrigation with water from the Yellow River, and to provide scientific basis for emitter selection of drip irrigation system in the irrigation area of the Yellow River. 【Method】Six labyrinth channel emitters with different inlet structures and different types were selected for irrigation experiments, and the flow variation laws and clogging conditions of the six emitters were compared and analyzed. 【Result】Emitter type and emitter inlet structure have a significant impact on emitter clogging (P<0.05).Among E1～E6 emitters, the compensated cylindrical emitter (E4) without boss structure has the fastest flow decline rate and the most serious emitter clogging degree, while the non-compensated cylindrical emitter (E6) with boss structure has the slowest flow decline rate and the lightest emitter clogging degree. The emitter inlet boss structure can effectively slow down the deposition of sediment particles at the inlet of the channel, reduce flow decline rate of emitter, reduce the clogging rate of emitter, and improve the anti-clogging performance of emitter. Compared with E5 emitter with the best anti-clogging performance in the emitter without boss structure, the relative flow of E6 emitter with boss structure is increased by 14.81%, and the clogging rate is reduced by 46.63%. 【Conclusion】The non-compensated cylindrical emitter with intake boss structure is selected for drip irrigation with water from the Yellow River. |
| Key words: yellow river water; drip irrigation; plugging; inlet structure |
