摘要
[目的]揭示洪泽湖古堰森林公园内土壤基本状况,为公园植物配置和管理提供科学依据。[方法]该研究依据洪泽湖大堤地形及覆盖植被的变化,在大堤两侧及坝顶公路两侧代表性地段设采样点,挖取土壤剖面51个,采集土壤样品并进行相关理化性质分析。[结果]各项参数变异程度从大到小依次为土壤有机质、有效磷、全氮、速效钾、容重、p H,变异系数分别为116.72%、66.30%、61.36%、42.23%、11.65%、7.25%。研究区土壤p H在7.0~8.5的占86.27%;土壤全氮、有效磷含量在中等水平以上的分别占62.75%、64.58%;有机质、速效钾在中等水平以上的分别占35.42%、37.25%。大堤纵向土壤养分空间分布的随机性较强,土壤容重及p H较稳定。大堤横向背水面一、二级阶地土壤整体状况优于青坎平台、公路旁土壤及背水面三级阶地土壤。[结论]研究区土壤较紧实,大多呈弱碱性或碱性,土壤氮素、磷素供应属中等水平,土壤有机质,钾素较缺乏。
[Objective] To reveal the basic status of Guyan Forest Park soil in Hongze,and to provide scientific basis for plant configuration and management. [Method] This study sets sampling points in typical area on both sides of the dike and both sides of the road on the top of the dam,digs 51 soil profiles,collects soil samples and analyzes their physical and chemical properties. [Result] The results show that the degree of variation from high to low are soil organic matter,available P,TN,available K,bulk density,p H,respectively,116. 72%,66. 30%,61. 36%,42. 23%,11. 65% and 7. 25%. In the researched area,the p H between 7. 0 and 8. 5 accounts for 86. 27%; the TN and available phosphorus content above mid-level accounts for 62. 75% and 64. 58%; organic matter and available K above mid-level accounts for35. 42% and 37. 25%. The randomness of the nutrients＇ spatial distribution for the dike longitudinal is great,while soil bulk density and p H are stable. The general status of the soil in 1st and 2nd terraces of the lateral dorsal surface of the dike is better than the soil of upstream terrace,along the road and the 3rd terrace of dorsal surface. [Conclusion] The researched area soil is compact,mostly weak alkali or alkaline,which has mid-level nitrogen and phosphorus supply,but lacking of organic matter and k.
出处
《安徽农业科学》
CAS
2015年第9期161-163,共3页
Journal of Anhui Agricultural Sciences
基金
江苏省高校优势学科建设工程项目(PADP)
关键词
土壤
理化性质
变异系数
Soil
Physical and chemical properties
Coefficient of variation
