摘要
为了提高杨树林的经济效益,在摸清杨树抗虫性序列的基础上,对不同杨树混交、杨树与其它主要造林树种混交的林分抗性动态进行了调查研究。结果表明:不同杨树混交林比纯林抗性强;杨树与其它树种的混交林抗虫性也有明显的差异。因此通过营造混交林,不仅可以提高杨树群体的抗性,而且能增进整个林业的经济效益。
Describes the resistance of mixed forests of different strains of poplars and poplars with other tree species to Anoplophora nobilis. Bothtypes of mixed forests were higher resistant than that of pure strainpoplar forest. It is advised that the economic benefit of forests can be improved by planting mixed forests.
出处
《西北林学院学报》
CSCD
1992年第3期44-50,共7页
Journal of Northwest Forestry University
