青岛市市郊土壤磷钾状况分析的研究  

Study on Fertility Status of Phosphorous and Potassium in Suburbs of Qingdao

作　　者：周亚鹏[1] 张利[2] 陈影[2] 扬扬[1] 熊瑞端[1] 张毅功[1] 

机构地区：[1]河北农业大学资源与环境科学学院,河北保定071001 [2]河北农业大学国土资源学院,河北保定071001

出　　处：《农机化研究》2013年第10期137-140,共4页Journal of Agricultural Mechanization Research

基　　金：河北省自然科学基金项目(D2010000795)

摘　　要：利用GPS定位法在青岛市市郊采集土壤样品113个,对其进行了pH值、速效磷、速效钾等土壤养分及理化性质的测试,并结合有机质和碱解氮分析了土壤肥力状况。结果表明,青岛市郊区土壤速效磷含量较低,其原因可能是由于该区土壤pH值偏低,导致磷有效性下降。解决办法是适量施用石灰,提高土壤pH值,增加磷的有效性。速效钾含量较高,这与土壤中碱解氮含量有关。氮素含量对钾素的固定与释放产生影响,碱解氮含量低,有利于原有固定态钾的释放,在施用氮肥时应考虑到钾的有效性问题。113 soil samples were collected in the suburb of Qingdao by the way of the location of GPS to test the soil nutrient and character of physic and chemistry,such as,the rapidly available phosphorous,rapidly available potassium and pH.And analysis the status of soil fertility combining the organic matter and alkali-hydrolysable nitrogen.The result indicated that the content of soil rapidly available phosphorous is low which might be the low pH.The low pH leads to the availability of phosphorous.The Lime should be used to increase the availability of phosphorous and the pH.The content of soil rapidly available potassium is high,which is concerned with the content of alkali-hydrolysable nitrogen.The content of nitrogen influences the fixation of potassium.The low content of alkali-hydrolysable nitrogen is benefits for the releasing of fixed potassium.So the availability of potassium should be considered when the nitrogen fertilizer be used.

关 键 词：土壤 速效磷 速效钾 青岛市市郊 

分 类 号：S153.61[农业科学—土壤学]