搜索结果: 1-3 共查到“森林经理学 Douglas-fir”相关记录3条 . 查询时间(0.043 秒)
Does prolonged stratification of Douglas fir influence the yield of seedlings?
provenance germination emergence
2015/7/2
A total of ten seed lots were used for evaluating germination capacity, originating from the Czech Republic, Slovakia,
France and the USA. Germination capacity, emergence rate and yield of seedlings...
Production of Douglas-Fir in the Czech Republic based on national forest inventory data
Douglas-fir introduced species time series age structure production
2015/4/24
This article summarizes basic estimates of productivity and trend analysis of one of the principal introduced forest tree species in the Czech Republic, i.e. Douglas-fir (Pseudotsuga menziesii [Mirbel...
An integrated management system for the Douglas-fir tussock moth in southern British Columbia
biological control defoliation Douglas-fir tussock moth forest pest management interior Douglas-fir nuclear polyhedrosis virus
2010/8/31
An integrated, long-term system to detect and treat infestations of Douglas-fir tussock moth in the Southern Interior of British Columbia was successfully implemented between 1984 and 1999. All aspect...