浙江平阳县典型绿竹林土壤质量分析  

Soil Quality Analysis of Typical Dendrocalamopsis oldhami Forests in Pingyang County,Zhejiang Province

作　　者：邱金莲 王刚 郭明阳 史文辉 应叶青 QIU Jin-lian;WANG Gang;GUO Ming-yang;SHI Wen-hui;YING Ye-qing(The State Key Laboratory of Subtropical Forest Cultivation,College of Forestry and Biotechnology,Zhejiang Agriculture and Forestry University,Hangzhou 311300,Zhejiang,China)

机构地区：[1]浙江农林大学林业与生物技术学院省部共建亚热带森林培育国家重点实验室,浙江杭州311300

出　　处：《竹子学报》2022年第1期60-65,共6页Journal of Bamboo Research

基　　金：康养笋用竹林品质提升关键技术研究与示范(2020SY07)。

摘　　要：为科学评价浙江平阳县地区绿竹林土壤环境质量,选取平阳县典型绿竹林样地,取样分析了土壤物理和化学性质及土壤酶活性,并采用主成分法对土壤因子进行分析。结果显示:研究区绿竹林土壤容重在1.37~1.51 g·cm^(-3),含水率在24.33%~27.67%,孔隙度在43.15%~48.08%之间。土壤全氮、全磷、全钾含量分别在1.09~2.29 g·kg^(-1)、0.38~0.61 g·kg^(-1)、21.74~34.41 g·kg^(-1)。土壤碱解氮、有效磷和速效钾含量分别在100.98~119.60 mg·kg^(-1)、2.25~4.94 mg·kg^(-1)和150.56~213.56 mg·kg^(-1)之间。土壤脲酶、酸性磷酸酶、硝酸还原酶、亚硝酸还原酶活性分别在1175.09~1332.93μg·d^(-1)·g^(-1)、6.93~9.22 mg·d^(-1)·g^(-1)、19.42~25.52μg·d^(-1)·g^(-1)、21.66~28.85μg·d^(-1)·g^(-1)之间。主成分分析结果显示:绿竹林土壤前5个主分量累计方差贡献率达85.18%。绿竹林土壤中第1和第2主分量反应原始数据信息的61.15%,其中以全氮、全磷、碱解氮、有效磷、速效钾、全钾、有机质、脲酶的特征向量绝对值较大。土壤有效养分含量是该区绿竹土壤肥力最主要的限制性因素,土壤有机质含量也是影响竹林土壤肥力的重要指标。因此,绿竹林经营需根据需肥规律科学施肥,提高肥料利用率,避免面源污染和土壤环境质量恶化。In order to fully understand the soil fertility status of the Dendrocalamopsis oldhami forests and scientifically evaluate the soil environmental quality,the soils of seven D.oldhami forest sites in Pingyang County,Zhejiang Province were sampled,and the soil physical and chemical properties as well as soil enzyme activities were measured.The principal component analysis was conducted to assess the soil factors.The results showed that the soil bulk density of the bamboo forest was 1.37~1.51 g·cm^(-3),the moisture content was 24.33%~27.67%,and the porosity was 43.15%~48.08%.The contents of total nitrogen,total phosphorus and total potassium in the soil were 1.09~2.29 g·kg^(-1),0.38~0.61 g·kg^(-1) and 21.74~34.41 g·kg^(-1),respectively.The contents of soil alkali hydrolyzable nitrogen,available phosphorus and available potassium were 100.98~119.60 mg·kg^(-1),2.25~4.94 mg·kg^(-1) and 150.56~213.56 mg·kg^(-1),respectively.The activities of soil urease,acid phosphatase,nitrate reductase and nitrite reductase were in the ranges of 1175.09~1332.93μg·d^(-1)·g^(-1),6.93~9.22 mg·d^(-1)·g^(-1),19.42~25.52μg·d^(-1)·g^(-1) and 21.66~28.85μg·d^(-1)·g^(-1),respectively.The principal component analysis showed that the first five principal components cumulatively contributed 85.18%soil properties of the D.oldhami forest.The first and second principal components of D.oldhami forest soil reflected 61.15%of the original data information,in which the absolute values of the feature vectors of total nitrogen,total phosphorus,alkali hydrolyzable nitrogen,available phosphorus,available potassium,total potassium,organic matter,and urease in the soil were relatively high.Therefore,in future management of D.oldhami forests,it is necessary to continuously regulate the soil nutrient condition by scientific fertilization based on the growth requirements,and avoid non-point source pollution and soil environmental quality deterioration caused by bamboo fertilization.

关 键 词：绿竹林 土壤因子 主成成分分析 

分 类 号：S714[农业科学—林学]