Comparison Of Emitters Of Ceramic Tube And Polyvinyl Formal Under Negative Pressure Irrigation On Soil Water Use Efficiency And Nutrient Uptake Of Crown Daisy
文献类型: 外文期刊
作者: Yang, PG; Bian, Y; Long, HY; Drohan, PJ
作者机构:
关键词: Negative-pressure irrigation; Emitter; Glebionis coronaria L.; Water-use efficiency; Yield
期刊名称: AGRICULTURAL WATER MANAGEMENT
ISSN: 0378-3774
年卷期: 2020 年 228 卷
页码:
收录情况: JCR(2021版) ; EI(2021版)
摘要: This study compared water-use efficiency (WUE) and nutrient absorption of Glebionis coronaria L. through emitters of ceramic tube (CT) and polyvinyl formal (PF) under negative pressure irrigation. Three (down arrow 4 kPa, down arrow 8 kPa, down arrow 12 kPa) water-supply treatments and artificial watering (CK) with pot experiments were investigated. The results showed that soil water content ranged from 18.1 to 27.2% with CT and 18.5-27.6% with PF, respectively. A decrease of water supply pressure resulted in a gradual decrease of water supply, water consumption, and nitrogen content of Glebionis coronaria L., whereas the contents of phosphorus and potassium gradually increased. The soil water content, plant height, yield, nutrient uptake, and WUE of plants irrigated with the PF emitter were superior to those irrigated with the CT emitter. The best water supply model was a water supply pressure of down arrow 4 kPa during the early growth stage and down arrow 8 kPa in the middle and late stages. Thus, water supply pressure has significant effects on the growth and development, yield, WUE, and nutrient absorption of Crown Daisy.
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