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科技导报  2015 

不同条件下的硅酸盐细菌C6X菌株释钾效果

DOI: 10.3981/j.issn.1000-7857.2015.08.002, PP. 18-23

Keywords: 硅酸盐细菌,黏土矿物,释钾,含水量,接菌量

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Abstract:

针对神东矿区采煤塌陷地土壤亏钾现象,将石英、钾长石和伊利石3种黏土矿物按不同比例混合,并以此作为供试基质,研究在不同控水条件下,硅酸盐细菌C6X菌株接种量对不同基质释钾效果的影响,以期找到最佳条件使硅酸盐细菌C6X菌株能够充分发挥释钾效应,从而使塌陷地土壤亏钾现象得到改善,以便进一步对当地土壤进行有效合理的利用。研究结果表明,接种硅酸盐细菌能增加基质速效钾含量;接种量变化影响基质的释钾效果,不同配比基质最佳接菌量均为10%;4种配比基质的最佳含水量随着黏土矿物黏性的增强而依次降低,分别为对应基质最大持水量的120%、100%、70%和55%;石英钾长石伊利石质量配比为113时,硅酸盐细菌C6X菌株对其释钾效果最优,可达1.44%。因此,土壤在含水量为55%时接种10%的硅酸盐细菌其土壤改良效果最为明显。

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