Influence of Soil and Irrigation Water pH on the Availability of Phosphorus in Struvite Derived from Urine through a Greenhouse Pot Experiment

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• 作者：Xiaoning Liu ; Yi Tao ; Guoqi Wen ; Fanxin Kong ; Xihui Zhang ; Zhengyi Hu
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2016
• 出版时间：May 4, 2016
• 年：2016
• 卷：64
• 期：17
• 页码：3324-3329
• 全文大小：284K
• 年卷期：0
• ISSN：1520-5118

文摘

One greenhouse pot experiment was used to investigate the availability of phosphorus in struvite derived from urine affected by soil pH (cinnamon soil, pH 7.3; paddy soil, pH 5.3) and irrigation water (pH 6.0 and 7.5) with bird rapeseed (Brassica campestris L.). The biomass of applied struvite in paddy soil was significantly greater than that of applied calcium superphosphate. However, statistically significant differences were not observed in cinnamon soil. Soil-applied struvite had a higher Olsen P compared to soil-applied calcium superphosphate irrespective of soil type. The biomass of applied struvite and irrigation with pH 6.0 water was greater compared to that with irrigation with pH 7.3 water irrespective of soil type, accompanied with significantly higher leaf chlorophyll concentration. Therefore, struvite has the potential to be an effective P fertilizer, and acidic irrigation water has greater influence on the availability of phosphorus in struvite than does acidic soil.