配施解磷菌肥对采煤塌陷区复垦土壤磷有效性的影响

发布时间：2018-05-17 14:41

本文选题：解磷菌肥 + 复垦土壤　；参考：《生态与农村环境学报》2017年04期

【摘要】：选取采煤塌陷区复垦5 a的土壤为对象,采用田间小区试验方法,研究解磷菌肥对复垦土壤无机磷形态及磷吸附-解吸特性的影响。结果表明,配施解磷菌肥可以提高复垦土壤有效磷含量,提高土壤Ca_2-P、Ca_8-P和闭蓄态磷(O-P)含量,降低Al-P、Fe-P和Ca_(10)-P含量。Ca_2-P含量、Ca_8-P含量与有效磷含量之间存在极显著正相关关系(P0.01),相关系数分别为0.997和0.926,对提高有效磷含量的贡献较大。有机肥+化肥+解磷菌肥(MCFB)处理可显著降低土壤对磷的吸附常数(K)和土壤最大缓冲容量(MBC)。与不施解磷菌肥处理相比,施用解磷菌肥处理对土壤最大吸附量(Xm)的影响较小。解磷菌肥可以提高复垦土壤磷的最大解吸量和解吸率,提高土壤磷素有效性。配施解磷菌肥对土壤有机质含量有一定影响,MCFB处理可以显著提高玉米产量,比有机肥+化肥处理提高3.82%。
[Abstract]:The effects of phosphorus releasing bacteria fertilizer on inorganic phosphorus forms and phosphorus adsorption-desorption characteristics of reclaimed soil were studied by using field plot test method. The soil was reclaimed for 5 years in coal mining subsidence area. The results showed that the content of available phosphorus in soil could be increased, the contents of Ca2-P + Ca8-P and the content of closed storage phosphorus (O-P) in soil could be increased. There was a very significant positive correlation between the content of CaAP-8-P and the content of available phosphorus, the correlation coefficients were 0.997 and 0.926, respectively, which contributed greatly to the increase of the content of available phosphorus. The phosphorus adsorption constant (K) and the maximum buffer capacity (MBC) of the soil were significantly decreased by MCFB treatment of organic fertilizer. Compared with the treatment without phosphorus, the effect of the treatment on the maximum adsorption capacity (Xm) of the soil was less. The maximum desorption amount and desorption rate of phosphorus in reclaimed soil can be increased and the availability of phosphorus in soil can be improved. The organic matter content of soil was affected by the combined application of phosphorus bacteria fertilizer and MCFB treatment, and the corn yield was significantly increased by MCFB treatment, which was 3.82% higher than that of organic fertilizer treatment.
【作者单位】：山西农业大学资源环境学院;
【基金】：国家自然科学基金(31272257) 国家公益性行业科研专项(201103004-5) 山西省青年科技基金(2013021032-2)
【分类号】：S158

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