摘要
以神东矿区采煤塌陷裂缝为研究对象，分析了阴坡以及阳坡塌陷裂缝对土壤碱解氮、速效磷、速效钾含量的影响。结果表明：裂缝对3种速效养分的影响均达到显著水平（P〈0．01），塌陷裂缝使原本由坡顶向坡底迁移的速效养分在裂缝处中断，大量流失，流失率范围为42．17％～10．53％，裂缝对阴坡的影响更大，表层土比下层土受影响更大，裂缝对碱解氮的影响程度大于速效磷大于速效钾。
Taking cracks of Coal Mining Subsidence as object, the effect of the shady slope and sunny slope collapsed cracks on alkaline hydrolysis N,available phosphorus and available potassium in Shendong mining area were studied. The results showed that the three available nutrients had reached a significant level（P〈0. 01）. When the available nutrients were originally moved from its poding to its base ,collapsed cracks interrupt them and lead to a huge loss, the attrition rate in the range of 42. 17%-10. 53%. What＇s more,this blocking action was greater in shady slope and in topsoil. This crack impact on alkaline hydrolysis N was larger than available phosphorus and potassium.
出处
《北方园艺》
CAS
北大核心
2014年第9期186-188,共3页
Northern Horticulture
基金
国家林业公益性行业科研专项资助项目(201104002-5)
关键词
塌陷裂缝
坡面
速效养分
collapsedcracks
slope
available nutrients
