甜菜心腐病为甜菜生理性病害,在广东、广西、福建等甜菜冬种区均有发生,根据1978年在广西蒙山县调查,一般发病率为10—20％,发病严重地块可达60％左右,使块根减产10—25％,含糖降低0.4度(锤度)。甜菜心腐病在甜菜苗期即开始出现,当植株生长到4—5对真叶时,心叶生长缓慢,变红褐色,叶片比健株短小,最后心叶和生长点变成黑褐色,周围叶片保持正常的绿色 Sugar beet heart rot is a physiological disease of sugar beet, and it has occurred in beet species in Guangdong, Guangxi and Fujian provinces. According to the survey in Mengshan County, Guangxi Province in 1978, the prevalence is 10-20% 60% or so, 10-25% reduction in root tuber, sugar reduced by 0.4 degrees (Brix). Beet heart rot appears in the beet seedling, when the plants grow to 4-5 pairs of true leaves, the heart leaves grow slowly, turning reddish brown, the leaves are shorter than the healthy plants, and finally the heart leaves and growth points turn dark brown, The surrounding leaves remain normal green