Application of chelated fertilizers to mitigate organic-inorganic fouling in brackish water drip irrigation systems
文献类型： 外文期刊
作者： Liu, Zeyuan 1 ; Ma, Changjian 4 ; Xiao, Yang 1 ; Lili, Zhangzhong 6 ; Muhammad, Tahir 7 ; Li, Yunkai 1 ;
作者机构： 1.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China
2.Minist Educ, Engn Res Ctr Agr Water Saving & Water Resources, Beijing 100083, Peoples R China
3.Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Inner Mongolia, Peoples R China
4.Shandong Acad Agr Sci, Jinan 250100, Peoples R China
5.Shandong Acad Agr Sci, Yellow River Delta Modern Agr Res Inst, Jinan, Peoples R China
6.Beijing Acad Agr & Forestry Sci, Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China
7.Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China
关键词： Emitter clogging; Brackish water; Multiple fouling; Fertilizer type; Irrigation uniformity
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： 2023 年 285 卷
页码：
收录情况： SCI
摘要： Organic-inorganic fouling in brackish water drip irrigation systems (BWDIS) reduces the irrigation and ferti-gation uniformity, resulting in decreased crop yield and quality. This study investigates the effect of chelated fertilizers on organic-inorganic fouling. Compared with control group (CK), application of Fe-ethylenediamine-di (o-hydroxy phenyl acetic acid (EDDHA-Fe) effectively prevented the multiple fouling by reducing the deposition of inorganic (precipitate and particulate) and organic fouling. Fulvic acid chelated iron fertilizer (FA-Fe) alle-viated multiple fouling by drastically decreasing the precipitate and particulate fouling, although organic fouling was slightly increased. Conversely, amino acid chelated iron fertilizer (AA-Fe) slightly decreased the precipitate fouling while drastically accelerated the particulate and organic fouling, leading to severe clogging. Accordingly, EDDHA-Fe and FA-Fe prevented the BWDIS fouling by 32.6-41.8% and 16.1-29.0%, while AA-Fe accelerated by 36.9-45.4%. Moreover, chelated fertilizers (FA-Fe, AA-Fe and EDDHA-Fe) demonstrated better anti-fouling than inorganic iron fertilizer (FeSO4). However, EDDHA-Fe would have negative environmental impact, hence FA-Fe is strongly recommended from the perspectives of fouling mitigation and soil environmental health improvement efficiency. These results may provide a new guideline for applying chelated fertilizers in BWDIS to prevent organic-inorganic fouling and overcome agricultural pollution.
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