潮土中水溶态硒和交换态硒含量变化的试验研究
Bulletin of Soil and Water Conservation(2009)
Abstract
在富硒潮土中施加磷酸二氢钙和硫磺,进行室内模拟试验,分析了土壤中水溶态硒和交换态硒含量的变化.结果表明,在潮土中施加磷酸二氢钙和硫磺对土壤中的水溶态硒含量变化影响不显著,适量施加磷酸二氢钙可提高土壤中交换态硒含量,施加硫磺的提高作用稍弱;施加0.12%的磷酸二氢钙,或者施加0.12%磷酸二氢钙加0.011%硫磺的方式,能有效地提高潮土中交换态硒的含量.试验结果对合理利用含硒土壤资源,科学施肥,开发富硒农产品具有指导意义.
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Key words
exchangeable,selenium,aqueous,simulated experiment,soil
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