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“除草无须净,弃害也存利”。留德博士,北京农业大学副教授由振国对杂草的这一新发现已引起世人瞩目。 现年35岁的由振国,1987年在德国霍恩海姆大学攻读博士学位时,因对杂草生态生理与防治的研究具有独到见解而获得导师和同行的赞赏。1990年,他学成回母校从事博士后研究继续主攻杂草,先后主持领导了9项课题。他在国际上首次提出“杂草生态经济阈值”、“防治阈期”及“杀除阈值”
“Weeding without net, but also save the profits.” Dr. Liu De, an associate professor at Beijing Agricultural University This new discovery of weeds by Zhen China has attracted worldwide attention. The 35-year-old Zhen Guo, Ph.D., Ph.D., from Hohenheim University, Germany in 1987 received admiration from his mentors and peers for his unique insights into the research on weed ecophysiology and control. In 1990, he returned to his alma mater to engage in postdoctoral research continue to focus on weeds, has presided over the leadership of nine topics. For the first time in the world, he put forward “weeds ecological economic threshold”, “prevention and treatment threshold” and “kill threshold”