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Effects of the continuous use of organic manure and chemical fertilizer on soil inorganic phosphorus fractions in calcareous soil

文献类型： 外文期刊

作者： Song, Ke 1 ; Xue, Yong 1 ; Zheng, Xianqing 1 ; Lv, Weiguang 1 ; Qiao, Hongxia 1 ; Qin, Qin 1 ; Yang, Jianjun 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Inst Ecoenvironm & Plant Protect, Shanghai 201403, Peoples R China

2.Shanghai Sci Observat & Expt Stn Agr Environm & L, Shanghai 201403, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： A 4-year field trial with three treatments and three types of annually rotated vegetables was conducted in calcareous soil in a greenhouse using a phosphorus (P) fractionation method based on the inorganic P fraction classification system described by Jiang-Gu. With the same nutrient input, vegetable yields and P uptake were more stable under the chemical fertilizer (CF) treatment than under the organic manure (OM) treatment, and the average utilization rate of P fertilizer (URP) values were 5.27% and 11.40% under the OM and CF treatments, respectively, over the 4 years. Compared with the values in 2009, the values of the inorganic P (Pi) fractionation, including Ca-P, Al-P and Fe-P, significantly increased over time by 310.89 mg.kg(-1), 36.21 mg.kg(-1), and 18.77 mg.kg(-1), respectively, with OM treatment and by 86.92 mg.kg(-1), 175.87 mg.kg(-1), and 24.27 mg.kg(-1) with CF treatment. These results suggest that 1) large amounts of P were released from Ca-2-P, Ca-8-P and Al-P and were taken up by vegetables in the calcareous soil, and 2) the excessive application of P fertilizer, especially OM, resulted in a substantial accumulation of Pi (Ca-2-P, Ca-8-P and Al-P), which increased the risk of pollution from organic farming diffusing into the surface water.

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