杉木林地根际与非根际土壤特性分析  

Rhizosphere and non-rhizosphere soil properties analysis of Cunninghamia lanceolata

作　　者：马玉莹[1] 周德明[1] 梅杰[1] 

机构地区：[1]中南林业科技大学林学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2011年第7期120-123,共4页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业科研专项经费项目(201004014)

摘　　要：测定了1年,4年,10年,18年,32年的杉木林地根际与非根际土壤微生物数量、化学性质、酶活性。结果表明:随着杉木林龄的增长,土壤中微生物数量表现出低—高—低的趋势,根际土壤微生物数量高于非根际土壤。土壤pH值随着杉木林龄增长有所下降,根际土壤pH值低于非根际土壤;有机质随着杉木林龄增长有所增加,根际土壤含量高于非根际土壤;水解氮、速效磷、速效钾含量都随着杉木林龄增长表现成低—高—低的趋势,水解氮、速效磷含量根际土壤高于非根际土壤,速效钾含量根际土壤低于非根际土壤。土壤中各种酶的含量随着杉木林龄增长表现出低—高—低的趋势,根际土壤含量高于非根际土壤。Determination the quantity of soil microorganism, chemical properties, enzyme activity of 1-year, 4-years, 10-years, 18-years, 32-years Chinese Fir was carried out. The results indicate： with the age growth of Cunningharnia lanceolata, microorganism amount exhibited a trend of ＂low-high-low＂, the rhizosphere soil microorganism quantity was higher than that of the non-rhizosphere soil; with the age growth of Cunninghamia lanceolata, pH values of soils decreased, organic matter increased; the rhizosphere soil pH values were lower than that of the non rhizosphere soil, the rhizosphere soil organic matter quantity was higher than that of the non-rhizosphere soil. With the age growth of Cunninghamia lanceolata, hydrolysable nitrongen, available phosphorus, available potassium exhibited a trend of ＂low-high-low＂, the rhizosphere soil hydrolysable nitrongen and available phosphorus quantity were higher than that of the non-rhizosphere soil, the rhizosphere soil available potassium quantity was higher than that of the non-rhizosphere soil. Along with the age growth of Cunningharnia lanceolata, enzyme activity of soil exhibited a trend of ＂lowhigh-low＂, the rhizosphere soil quantity was higher than that of the non rhizosphere-soil.

关 键 词：杉木 根际 土壤微生物 土壤化学性质 酶活性 

分 类 号：S791.27[农业科学—林木遗传育种]