Effect of fertilization on emitter clogging in drip irrigation using high sediment water: Perspective of sediment discharge capacity

文献类型： 外文期刊

第一作者： Hou, Peng

作者： Hou, Peng;Li, Yan;Wang, Xuejun;Shi, Ning;Ma, Changjian;Hou, Peng;Liu, Lu;Tahir, Muhammad;Xiao, Yang;Li, Yunkai;Liu, Lu;Tahir, Muhammad;Xiao, Yang;Li, Yunkai;Ma, Changjian

作者机构：

关键词： Flow channel; Control threshold for particle size; Sediment deposition and discharge ratio

期刊名称：AGRICULTURAL WATER MANAGEMENT （ 影响因子：6.7； 五年影响因子：6.6 ）

ISSN： 0378-3774

年卷期： 2024 年 294 卷

页码：

收录情况： SCI

摘要： Emitter clogging is a major issue that restricts drip irrigation technology with high-sediment loaded water. Traditional anti-clogging method using water filtration is not only costly but also consumes an excessive amount of energy. This study provided a new anti-clogging method for drip irrigation systems by directly desilting sediment from the emitter flow channel. The emitter SDC was assessed using three types of fertilizers [Urea (UN), ammonium poly-phosphate (APP), and mono-ammonium phosphate (MAP)] and a control group (CK, no fertilizer). The results showed that most sediment can be discharged through the emitter flow channel. Nitrogen fertilizer applications significantly affected (P<0.05) the emitter SDC. Both APP and MAP significantly reduced the emitter SDC, causing an average decrease of 0.61 mu m-1.21 mu m in the control threshold for particle size mu(0) and 0.55%-1.67% in the sediment discharge rate (phi(e)), while th(e) sediment deposition and discharge ratio (phi) increased by 0.004%-0.040% on average. However, UN application effectively increased the emitter SDC, with an increase of 0.45 mu m-0.53 mu m in the control threshold for particle size mu(0), 0.70%-5.99% in phi(e), while th(e) sediment deposition and discharge ratio (phi) decreased by 0.002%-0.003%. The relative average flow rate (Dra) among different fertilizer treatments demonstrated Dra(UN)> Dra(CK)> Dra(MAP)> Dra(APP). The findings suggested that the emitter SDC can be improved by using suitable fertilizer type. This study clarified the effect of fertilizer on the sediment discharge capacity of emitter, with implications for the management of high-sediment loaded water in irrigation.

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