加拿大90％的采伐为皆伐,因而每年要定植约十亿株苗木。这就需要对造林过程的各个方面,诸如苗圃生产、苗木管理、定植、预整地及后期管理有高度的重视并加以研究。本文涉及的内容是加拿大西部苗圃与发展的基本情况,以及今后准备进行的保证苗木优质高产方面的研究。 About 90% of Canada’s logging is clear-cut, and about one billion seedlings are planted each year. This requires a high degree of attention and research on all aspects of the afforestation process, such as nursery production, seedling management, colonization, pre-placement and post-term management. This article is about the basic situation of nurseries and development in Western Canada and the research that will be conducted to ensure the quality and high yield of seedlings in the future.