Coccobius azumai Tachikawa which was introduced from Okinawa, Japan, was first released and successfully established in Huidong County, Guangdong Province in 1989.Since then systematic observation and investigatlon were made. The result showed that a year later the parasitism rate of C. azumai on Hemiberlesia pitysophila reached as high as 55. 8 % ~ 64. 2 % within 50 m from the released site and the density of female H. pitysophila was reduced from 3. 41 to 0. 64 per needle. Two years later the effective co...
| 
推荐 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
