摘要
对广西百色市老山林场、右江区西南桦林相思拟木蠹蛾Lepidarbela baibarana(Matsumura)不同海拔高度危害程度、人工修枝对危害程度影响、树干不同高度害虫分布情况等进行调查。结果表明,相思拟木蠹蛾主要危害低海拔西南桦,危害程度随着海拔的上升而下降。幼虫侵入期人工修枝会加重相思拟木蠹蛾危害。害虫对树干高度有选择性,树干4.1～6.0 m受害最重。局部地区的西南桦受相思拟木蠹蛾危害严重,应加强该虫监测防治技术研究。
Damage degree of L. baibarana in different altitude, effect of artificial pruning on damage degree and distribution on trunk were investigated in B. alnoides forest in LaoShan Forest Farm, You- jiang County of Baise of Guangxi. The results showed L. baibarana mainly attacked B. alnoides at low altitude. The damage degree reduces as the altitude increases. Artificial pruning may deteriorate the damage in the period of larva invasion. L. baibarana preferred to damage on trunks at the height of 4. 1 - 6.0 m above the ground. The damage of L. baibarana was serious in B. alnoides forests in local area. Research on prevention and control technology should be strengthened.
出处
《中国森林病虫》
北大核心
2012年第3期26-28,共3页
Forest Pest and Disease
基金
广西林业厅"十一五"科技项目"西南桦人工林丰产技术研究与示范"(项目编号:桂林科字(2001)第80号)
