摘要
ZHANG Zhong,LI Zi zhong(Department of Plant Protection, Agricultural College, Guizhou University,Guiyang 550025,China)
ZHANG Zhong,LI Zi zhong(Department of Plant Protection, Agricultural College, Guizhou University,Guiyang 550025,China)
基金
贵州省科学基金资助项目 [黔科综通字 (1997) 133]