【摘要】 经调查分析表明:3种落叶松对落叶松叶蜂产卵的抗性强弱依次为日本落叶松、华北落叶松、朝鲜落叶松;幼虫危害期对落叶松的抗性为朝鲜落叶松、日本落叶松、华北落叶松;防治后生长恢复力的大小依次为日本落叶松、华北落叶松、朝鲜落叶松;综合抗性为日本落叶松最强,华北落叶松次之,朝鲜落叶松较弱。更多还原

【Abstract】 Based on investigation and analysis, the resistance of Larijc kaempferi (Lamb. ) Carr. to oviposition of the larch sawfly ,Pristiphora erichsonii (Hartig) was stronger than L. prineipis-ruppreehtii Mayr. the latter stronger than L. olgensia var. koreana Nakai. For the resistance to the damage caused by the larvae of the larch sawfly, L. olgensia var. koreana was stronger than L. kaempferi (Lamb. ) the latter stronger than L. prineipis- ruppreehtii. The capability of regained growing of L. kaempferi (Lamb. ) was stronger than L. prineipis-ruppreehtii’. the latter stronger than L. olgen.sia var. koreana. A comprehensive resistance of L. kaempferi stronger than L. prineipis-ruppreehtii, the latter stronger than L. olgensia var. koreana.更多还原