Investigation on the Incidence of Rapeseed Clubroot Disease in Wuyuan County
[Objective]The aim was to promote rapeseed clubroot resistant varieties and effectively prevent rapeseed clubroot disease.[Method]The incidence of clubroot disease of Huayouza 62R and other main rapeseed varieties was investigated and compared in 7 towns of Wuyuan county by field observation and investigation,asking village cadres and farmers.At the same time,some control measures were taken to observe the control effect.[Result]The incidence area of rapeseed clubroot disease in Wuyuan county was large,which spread and covered the whole county.There were more severe disease areas,and there was a trend that the non-clubroot disease area developed to the light disease area,and the light disease area developed to the severe disease area.The incidence of rapeseed clubroot varied greatly among varieties.The incidence of the same variety in early sowing fields was higher than that in late sowing fields.The incidence of the same variety in low-lying fields was more serious than that in high-lying fields.Compared with other major rapeseed varieties,Huayouza 62R was resistant to rapeseed clubroot disease.The control strategy adopted early chemical prevention,which could promote the regeneration of fibrous roots of diseased plants to a certain extent and reduce the degree of yield reduction caused by clubroot disease.[Conclusion]Practice has proved that lime disinfection,appropriate delay of sowing date,chemical control(using cyazofamid,humic acid fertilizer and brassinolide mixed spray)and other methods could reduce the incidence of clubroot disease to a certain extent,but the cost was high,and the yield of rapeseed was greatly affected.The promotion of clubroot-resistant varieties(such as Huayouza 62R)should be strengthened to effectively prevent clubroot disease.
万方数据
维普
