聊城市不同土地利用方式对土壤肥力影响的研究

利用聊城市2007年和2008年的土壤样本测试数据进行单因素方差分析和均值多重比较,初步研究了不同土地利用方式对土壤肥力的影响,结果表明:(1)土地利用方式对土壤养分有显著或极显著的影响,其影响程度由大到小依次为全氮有机质全磷,而对土壤pH的影响并不显著。(2)土壤有机质和全氮在不同土地利用方式之间存在着显著性差异,其含量由高到低的顺序是:农耕地﹥林地﹥荒地﹥农林(果)间作地。(3)土壤全磷含量受土地利用方式的影响相对较小,相对而言,林地中的土壤全磷含量最高,农耕地和荒地次之,农林(果)间作地的土壤全磷含量最低。(4)土壤pH在不同土地利用方式下的变化不显著,基本都呈碱性或弱碱性,其中以农耕地的碱性最大。

Effects of Land Use on Soil fertility in Liaocheng City

Using 2007 and 2008 soil sample test data,this paper studyed the impact of different land use types on soil fertility by the single factor analysis of variance and multiple mean comparison.The results showed that：（1） There was significant or very significant impact on soil nutrients under different land use type.The decreasing order of impact degree is：total N organic matter total phosphorus.But there was no significant impact on soil pH value.（2） There was significant impact on soil organic matter and nitrogen among the different land use types.the order from high to low levels are：agricultural land wasteland ﹥ Agriculture ﹥ forest ﹥ forestry （fruit） intercropping.（3） There was relatively small impact on soil phosphorus among the different land use types.Relatively speaking,the content of soil total phosphorus in forest is in the highest level,followed by agricultural land and wasteland,forestry （fruit） intercropping in the lowest.（4） The soil pH values in different land use types did not change significantly,the soil appears alkaline or weak alkaline on the whole,of which agricultural land shows the most alkaline.