Relationship between high growth of Pinus koraiensis seedlings and meteorological factors;
红松苗木高生长与气象因子相关关系的研究
Study on biological characteristics and chemical control of Pissodes sp.;
红松木蠹象生物学特性及幼虫化学防治的研究
The study was performed in the broadleaved Korean pine mature and overmatures forest in Fenglin conserva- tion area and the number,non-rotten ratio,heartwood rotten ratio and sapwood rotten ratio were summarized.
本文是以丰林保护区阔叶红松成过熟林木为研究对象,通过对红松株数,无腐率、心腐率、边腐率统计结果表明:心腐率随根径的增大而增加,且以林分类型为主要因子而转移,林分中红松成过熟林木无腐朽率为19。