Zhang Hui, Tao Hongfei, Liu Yao, Li Qiao, Jiang Youwei, Aihemaiti Mahemujiang, Yang Wenxin
College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi, China.
Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Urumqi, China.
PLoS One. 2024 Dec 31;19(12):e0313888. doi: 10.1371/journal.pone.0313888. eCollection 2024.
The clogging performance of single-winged labyrinth drip irrigation tapes is influenced by a variety of factors during the muddy fertilizer water irrigation process. In this paper, we designed a uniform orthogonal test to study the effects of fertilizer concentration, sediment content and working pressure on the clogging of single-wing labyrinth drip irrigation tapes. The observed data from the experiment were analysed and calculated using range analysis, variance analysis, and main-effect multiple comparison analysis, then the optimal working conditions were determined. The results of the study showed that fertilizer concentration and sediment content had a significant effect on the average relative flow, and the degree of influence of each influencing factor on the average relative flow was as follows: sediment content > fertilizer concentration > working pressure. The average relative flow of water-fertilizer-integrated irrigation under muddy-water conditions decreased with the increasing of irrigation frequency, and accelerate the clogging of dripper. Eventually we concluded that muddy fertilizer water irrigation exacerbated the clogging of dripper. The highest average relative flows across three sediment levels occurred under the F1 treatment, measuring 0.699, 0.681, and 0.668 for type-H1, type-H2, and type-H3 tapes, respectively. The research results can provide a reference basis for the optimal design of structural parameters of single-wing labyrinth drip irrigation tape channel.
在浑水肥灌溉过程中，单翼迷宫式滴灌带的堵塞性能受多种因素影响。本文设计了均匀正交试验，研究肥料浓度、含沙量和工作压力对单翼迷宫式滴灌带堵塞的影响。利用极差分析、方差分析和主效应多重比较分析对试验观测数据进行分析计算，进而确定最优工作条件。研究结果表明，肥料浓度和含沙量对平均相对流量有显著影响，各影响因素对平均相对流量的影响程度依次为：含沙量＞肥料浓度＞工作压力。浑水条件下一体化水肥灌溉的平均相对流量随灌溉次数增加而降低，加速了滴头堵塞。最终得出浑水肥灌溉加剧了滴头堵塞的结论。在三种含沙量水平下，F1处理的平均相对流量最高，H1型、H2型和H3型滴灌带的平均相对流量分别为0.699、0.681和0.668。研究结果可为单翼迷宫式滴灌带流道结构参数的优化设计提供参考依据。
