Biological control characterized by environment friendly,safety and high efficiency is emerging as a kind of plant disease prevention and control technology in recent years.It can better realize the sustainable development of agriculture and the unity of social,economic...MORE Biological control characterized by environment friendly,safety and high efficiency is emerging as a kind of plant disease prevention and control technology in recent years.It can better realize the sustainable development of agriculture and the unity of social,economic and ecological benefits,becoming the focus of resea...