林业科技开发2011，Vol.25Issue(3)：58-62,5.DOI:10.3969/j.issn.1000-8101.2011.03.015
喀斯特地区人工林土壤速效养分与酶活性的季节变化
The seasonal variation of available nutrients and enzyme activity in the plantation soils in karst areas
摘要
Abstract
For developing the reasonably managements in the new plantation in degraded karst areas, the seasonal variation of soil available nutrients and enzyme activity were studied in the Eucommia ulmoides, Alnus crernastogyne, and Prunus salicina plantations. The results indicated that there were the significantly seasonal dynamics of soil available nutrients and enzyme activity in three kinds of plantations. According to the decrease of soil available nutrients mainly resulted from tree absorption, it could be infered that nitrogen fertilizers should be applied from Spet to Jan in the E. ulmoides and A. crernastogyne plantations, and from Nov to Jan in the P. salicina plantations. Phosphorus fertilizers should be applied from Jul to Nov or from Jan to May in the E. ulmoides and P. Salicina plantations, and from Mar to May or from Jul to Sept in the A.crernastogyne plantations. As to potassium fertilizers, it should be applied from Sept to Nov in the E. ulmoides and A. cremastogyne plantations, and from Nov to Mar in the P. salicina plantations. The urease activities in three plantation soils studied were higher in spring and summer than that in winter, the polyphenol oxidase activities in three plantation soils were higher in spring and autumn than that in winter, and the catalase activities were higher in autumn and winter than that in spring and summer. The seasonal variations of alkaline phosphatase activities in three kinds d plantations were different.关键词
人工林/土壤/速效养分/酶/喀斯特地区Key words
plantation/ soil/ available nutrients/ enzyme/ karst area引用本文复制引用
段达祥,高晟,吴永波,刘成刚..喀斯特地区人工林土壤速效养分与酶活性的季节变化[J].林业科技开发,2011,25(3):58-62,5.基金项目
国家"十一五"科技支撑计划(编号:2006BAD03A0303). （编号:2006BAD03A0303）
