Synthesis of bark beetle pheromone verbenol and verbenone 松小蠹信息素马鞭烯醇和马鞭烯酮合成研究
Resistance of host trees and existance strategy evolution of bark beetles 树木抗性与小蠹虫生存策略的进化
Infectivity of entomopathgenic nematode steinernema ceratophorum to bark beetle dendroctonus valens larvae 拟双角斯氏线虫侵染红脂大小蠹幼虫的研究
Study on the species diversity of plant community and coniferous bark beetles community diversity in niubeiliang nature reserve 牛背梁自然保护区植物群落和针叶树小蠹虫群落物种多样性研究
The blaze , 50 miles east of los angeles , spread rapidly along two fronts and late saturday threatened to burn explosively dry forests devastated by drought and bark beetles 位于洛杉矶东面50英里远的这场大火,正朝着两端疯狂肆虐,到上周六为止,严重威胁着当地的干燥林地,这些林地由于干旱面临着被燃烧爆炸危险。