首页   按字顺浏览 期刊浏览 卷期浏览 Artificial Regeneration of Jeffrey Pine in the Sierra Nevada
Artificial Regeneration of Jeffrey Pine in the Sierra Nevada

 

作者: R.F. Walker,  

 

期刊: Journal of Sustainable Forestry  (Taylor Available online 1999)
卷期: Volume 9, issue 3-4  

页码: 23-38

 

ISSN:1054-9811

 

年代: 1999

 

DOI:10.1300/J091v09n03_02

 

出版商: Taylor & Francis Group

 

关键词: Forest regeneration;reforestation;seedling growth;nutrition;water relations;foerst fertilization;solar protection;artificial shading;Jeffrey pine;Pinusjeffreyi

 

数据来源: Taylor

 

摘要:

Fertilization with three controlled release nutrient formulations, Sierra 16-6-10 % Minors, High N 24-4-7, and Osmocote 17-7-12, and partial shade provided by mesh solar barriers were evaluated for their effects on establishment of bare root Jeffrey pine(Pinus jeffreyiGrev & Balf.) seedlings on an eastern Sierra Nevada reforestation site. The Osmocote formulation proved effective in stimulating seedling growth with little impairment of survival, particularly at a medium application rate of 20 g per seedling, although a low rate of 10 g and a high rate of 30 g were also effective. Growth responses to the Sierra and High N formulations were generally poor, and the high application rate of the latter induced excessive mortality. Foliar N, P, K, S, Fe, Zn, Cu, B, and Al varied significantly among fertility treatments, but enhanced N nutrition largely accounted for growth stimulation. Solar protection also increased growth, attributable to improved water relations as indicated by higher xylem water potentials, but was ineffectual in elevating seedling survival.

 

点击下载:  PDF (119KB)



返 回