摘要
经对北美红杉各种植点白蚁为害状况的调查分析结果表明,白蚁为害随着海拔高度的增加而减少,但不明显,以1200～2000m为害严重,2100m以上均无白蚁为害,北美红杉造林后,以当年受害为主,与造林苗大小无关,6月造林较1月造林受害严重。采用3%呋喃丹防治,用量每株10g,总体防效可达66 63%～95 25%,其中防效最好的是屏边县大凹腰3个试验点。另外,12月和1月造林防效较好,6月造林防效最差,仅为68 75%。
The termite damage of Sequoia sempervirens at twelve experimental sites was investigated. The results indicated that the damage released as the increase of elevation. The elevation of 1 200 m to 2 000 m was the region suffered most seriously, there was no termite damage at the site with the elevation higher than 2 100 m. Most damage occurred in the annual plant.
出处
《云南林业科技》
2003年第3期26-28,共3页
Yunnan Forestry Science and Technology
