木麻黄无性系和实生林的根际土壤养分及酶活性  

Rhizosphere soil nutrient and enzyme activity of Casuarina equisetifolia clone plantation and seedling plantation

作　　者：侯杰[1] 叶功富[2] 张立华[3] 卢昌义[3] 

机构地区：[1]闽江学院数学系,福建福州350108 [2]福建省林业科学研究院,福建福州350012 [3]厦门大学海洋与环境学院,福建厦门361005

出　　处：《福建林业科技》2008年第1期26-28,34,共4页Journal of Fujian Forestry Science and Technology

基　　金：国家"十一五"科技支撑计划项目(2006BAD03A14-01;2006BAD01A16);福建省重大专项和福建省林木种苗攻关项目

摘　　要：木麻黄无性系林根际土壤有机质、全氮、水解氮、全磷、全钾、速效钾、钙和镁离子含量均大于木麻黄实生林,有效磷含量则相反。与实生林相比,木麻黄无性系林根际和非根际土壤pH值均有所下降,CEC值增加。木麻黄无性系林根际土壤脲酶、磷酸酶、过氧化物酶及多酚氧化酶活性均高于木麻黄实生林。脲酶除外,其余3种酶活性均是根际大于非根际。与木麻黄实生林相比,木麻黄无性系林根际环境得到改善,林地土壤营养贮量和养分供应能力提高,生长效果亦优于本地实生苗造林。The results showed that the contents of organic matter, total N, Hydrolytic N, total P, total K, available K, Ca^2＋ and Mg^2＋ in rhizosphere soil of clone plantation were higher than those of seedling plantation, except for available P. Compared to seedling C. equisetifolia, pH value of soil declined in clone plantation but CEC value increased. Uresese, phosphataese, peroxidase and polyphenol oxidase of rhizosphere soil were more active in clone plantation than those in seedling plantation. Environment in rhizosphere soil of C. equisetifolia clone plantation was improved and nutrient-holding and providing capacities were enhanced, therefore, growth status was better than seedling C. equisetifolia.

关 键 词：木麻黄 无性系 根际土壤 土壤养分 酶活性 

分 类 号：S792.93[农业科学—林木遗传育种]