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甜菜黑脚病在内蒙西部甜菜栽培区广泛发生,一般为害率10—20％,严重者可达40—50％。根据镜检,它是由蛇眼病菌 Phoma betae 和猝倒病菌 Pythium sp.所致:病害发生与品种有明显关系。在幼苗期进行田间调查结果,P632和 Kleiwazleben E 两品种发病率最低,分别为8.2％和10.1％,AB 品种最高,为40.0％,其余 B020为22.4％,M_2为25.0％,PZHR_4为27.7％,CLR 为27.8％和 Beta 242/53为29.5％,均是中度感病品种。
Sugar beet blackfoot disease occurs widely in beet cultivation area in western Inner Mongolia, the general damage rate of 10-20%, severe cases up to 40-50%. According to the microscopic examination, it is caused by Phoma betae and Pythium sp.: The occurrence of the disease is obviously related to the variety. The results of the field investigation in seedling stage showed that the incidence of P632 and Kleiwazleben E were the lowest, 8.2% and 10.1% respectively, the highest variety of AB was 40.0%, the rest B020 was 22.4%, M_2 was 25.0%, PZHR_4 was 27.7% The CLR was 27.8% and the Beta 242/53 was 29.5%, all of which were moderately susceptible.