In this study,five fungicides and one micro element fertilizer,by root-drenching method during rapeseed seedling stage(2to 3true leaves),and lime treatment,a traditional control method,were chosen to evaluate the control effect on clubroot and yield loss caused by Plasmodiophora brassicae in Brassica napus.Five fungicides,microelement fertilizer and lime treatments have good control effect on clubroot.Control efficacy of 50% carbendazim WP reached 90.82%.10%cyazofamid SC,50%carbendazim WP,75%chlorothalonil ...