杉木人工林土壤理化性质及酶活性的变化规律.pdfVIP

2010,38 9 : 81~ 83 Guizhou Agricultural Sciences []10012 3601 2010 092 05842 00812 03 杉木人工林土壤理化性质及酶活性的变化规律 舒洪岚 , 330032 [ ] 为揭示杉木人工林土壤肥力变化规律, 研究了江西省景德镇市枫树山林场不 连栽代数不 林龄的杉木人工林土壤理化性质和酶活性的变化结果表明: 随着林龄的增长, 除土壤容重趋于增加外, 土壤p 阳离子交换量全氮速效钾及酸性磷酸酶过氧化氢酶尿酶和蛋白酶的活性均有所降低; 随着土 壤深度增加,土壤p 阳离子交换量氮磷钾养分以及酶活性均呈下降趋势二代杉木林的土壤容重p 阳离子交换量和速效磷的含量高于一代杉木林,但土壤全氮速效钾的含量和酶活性低于一代杉木林;土壤 酸性磷酸酶过氧化氢酶脲酶蛋白酶与土壤p 有机质全氮速效钾呈极显著或显著正相关, 土壤酸性 磷酸酶过氧化氢酶脲酶与土壤速效磷呈极显著正相关 [] 杉木人工林; 连栽; 林龄; 土壤肥力; 理化性质; 酶活性 [] S158. 1 [] A Soil Phys icochemical Prope rty and Enzymatic Activity of Chinese Fir P lantation S U ong2lan J ian gxi Un iver sity of F ina nce an d E con omics, N an ch a ng , J ia ngxi 330032 , Chin a Abst ract : The soil physicochemical property and enzymatic activity of Chinese fir plantations with different continuous planting generations and different forest age in Fengshushan forest farm of Jiangxi province were studied to reveal the change regulation of soil fertility of Chinese fir plantation. Theresults showed that p , CEC, total N content, available K content and activity of acid phosphatase, catalase, urease and protease decreased with the increase of forest age except for soil bulk density, the p , CEC, N,P and K nutrients and enzymatic activity decreased with the increase of soil depth. The soil bulk density, p , CEC and available P content of the second generation of Chinese fir plantation were higher than that of the first,but the total N and available K content and enzymatic activity was lower than that of the first generation of Chinesefir plantation. There were significant or very significant positivecorrelations between activity of soil acid phosphatase, catalase, urease and protease and p , organic matter content, total nitrogen content, available K content. There were very significant positive correlations between activity of soil acid phosphatase, catalase andurease and available P content. Key wor ds: Chinese fir plantation; continuous planting; forest age; soil fertili