【摘 要】本篇论文主要论述了无公害农产品甜菜根腐病的防治原则、病害症状、病原和防治措施。 【关键词】甜菜;根腐病;防治措施 [Abstract] This paper mainly discussed the prevention and control principle, disease symptom, pathogen and prevention and control measur
The source water in one forest region of the Northeast China had very high natural organic matter (NOM) concentration and heavy color during snowmelt period.The