Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Anhui Agricultural Sciences》 2009-26
Add to Favorite Get Latest Update

Biological Cycling of Nutrient Elements in Young Eucalyptus urophylla×E.grandis Plantation

SU You-wen et al(Gaofeng Forest Farm of Guangxi,Nanning,Guangxi 530001)  
[Objective] The study was to provide the scientific basis for nutrition management of Eucalyptus urophylla×E.grandis plantation.[Method] Standard plot method was taken to study the content,accumulation,biological cycling characteristics of N,P,K,Ca,Mg,Fe,Mn,Z,Cu in 2 yeas old young E.urophylla×E.grandis plantation.[Result] Nutrient elements content in different organs of E.urophylla×E.grandis from big to small in order was leavesbarkbranchrootstem.Among the macronutrient,N content in each organ was the highest,and the following was those of Ca or K,P content was the lowest.Among the trace elements,Mn and Fe contents in each organ were the highest,and the following was that of Zn,Cu content was the lowest.The storage amount of nutrient elements in different organs from big to small in order was stembranchrootbarkleaves.The uptake,return amount and retention of forest on nutrient were 233.88,70.28,163.60 kg/(hm2·a) resp.with productivity of 0.71,cycle coefficient of 0.30 and turnover period of 4.66 a.[Conclusion] The utilization ratio of E.urophylla×E.grandis on nutrient elements was higher with the lower returning rate and the longer turnover period.
【Fund】: 广西自然科学基金项目(桂科自0640018);; 广西教育厅科研基金项目(2006226)
【CateGory Index】: S792.39
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved