杉木连栽障碍的原因及其对策  

Problem of Chinese Fir Continuous Planting: Its Causes and Solutions

作　　者：朱斌[1] 王维中[1] 

机构地区：[1]南京大学生物科学与技术系

出　　处：《中南林学院学报》1999年第1期76-78,共3页Journal of Central South Forestry University

摘　　要：综述了杉木连栽障碍的主要原因：一方面是由于连栽引起了杉木林地生态环境恶化，如炼山和全垦使得养分和水土流失，土壤物理和化学性质发生改变；另一方面是由于微生物区系的变化及土壤酶活性的改变使得次生代谢物质如酚类大量积累，使杉木产生自毒现象．针对这些原因。S This paper synthetically analyzed the causes of the continuous planting problem of Cunninghamia lanceolata . The following two causes might be the most important ones.One was the ecosystem problem of the man made Chinese fir forest,i.e.,nutrient loss and soil erosion caused by control burning and thorough plowing,and the changes of the physical and chemical properties of soil,etc.The other was the changes of soil microorganisms,the decrease of enzyme activities,and the accumulation of the secondary metabolites,such as phenols,causing autotoxity.To resolve the problem,some solutions were also suggested in the paper.

关 键 词：杉木 连栽障碍 自毒作用 土壤生态环境 

分 类 号：S725.5[农业科学—林木遗传育种] S791.27[农业科学—林学]