摘要
为了解南京市新济洲国家湿地公园的土壤肥力状况,采集了该湿地公园65个土壤样本,分析其pH、电导率、有机质、碱解氮、有效磷、速效钾、全氮、全磷和全钾含量,并利用综合评价方法评价其肥力水平。结果表明,新济洲国家湿地公园土壤pH平均为8.45,为碱性土壤;土壤电导率平均为128.88μS/cm,为非盐化土壤;土壤有机质、碱解氮和全氮平均含量分别为17.05 g/kg、71.00 mg/kg和0.81 g/kg,都为中下水平;速效钾和全钾平均含量分别为107.89 mg/kg和16.51 g/kg,均为中上水平;而有效磷和全磷平均含量分别为27.13 mg/kg和1.60 g/kg,分别为高水平和极高水平。综合评价结果显示,该湿地公园土壤综合肥力水平主要集中于三级和四级,总体上属于中等偏上水平。在此次调查的4个岛屿中,新生洲和子母洲土壤的养分条件较好,土壤综合肥力水平较高,其次是再生洲,新济洲土壤综合肥力最差。综上可知,新济洲国家湿地公园的土壤养分总体处于中等及偏上水平,应根据各岛屿的具体情况,采取一定措施以改善土壤肥力状况。
In order to investigate the soil nutrient characteristics and fertility level of Xinjizhou National Wetland Park in Nanjing City,pH,electrical conductivity,content of organic matter,alkaline nitrogen,available phosphorus,available potassium,total nitrogen,total phosphorus and total potassium of 65 soil samples were analyzed.The fertility level was evaluated using comprehensive evaluation method.The results showed that the average pH of soil in Xinjizhou National Wetland Park was 8.45,which was alkaline soil.The average value of soil conductivity was 128.88μS/cm,which was non-salinized soil.The average contents of soil organic matter,alkaline nitrogen and total nitrogen were 17.05 g/kg,71.00 mg/kg,and 0.81 g/kg,respectively,which were below intermediate level.The average contents of available potassium and total potassium were 107.89 mg/kg and 16.51 g/kg,respectively,which were above intermediate level.The average contents of available phosphorus and total phosphorus were 27.13 mg/kg and 1.60 g/kg,respectively,which were high and extremely high level.Soil comprehensive fertility was mainly in the third and fourth level,which generally belonged to the intermediate and above intermediate level.Among the four islands investigated in this study,the soil nutrient conditions of Xinshengzhou and Zimuzhou were the best,and the soil comprehensive fertility level was the higher,followed by the Zaishengzhou,and the Xinjizhou was the worst.In conclusion,the soil nutrients in Xinjizhou National Wetland Park are generally in the middle or higher level,and some measures should be taken to improve the soil fertility according to the specific conditions of each island.
作者
王红
邵京
吴雨
徐丽
徐静
卢炳浩
李仁英
黄利东
谢晓金
陈佳林
翟伊然
WANG Hong;SHAO Jing;WU Yu(Nanjing Academy of Landscape and Forestry(Nanjing Landscaping Guidance Station),Nanjing,Jiangsu 210037;College of Applied Meteorology,Nanjing University of Information Science&Technology,Nanjing,Jiangsu 210044)
出处
《安徽农业科学》
CAS
2022年第8期68-72,96,共6页
Journal of Anhui Agricultural Sciences
基金
江苏省林业科技创新与推广项目(LYKJ〔2019〕08)。
关键词
土壤养分
变化特征
新济洲国家湿地公园
综合肥力
评价
Soil nutrients
Variation characteristics
Xinjizhou National Wetland Park
Comprehensive fertility
Evaluation
