恶苗病又称公稻子,从苗期到抽穗期均可发生。恶苗病菌寄生或附着在种子上,种子带菌是恶苗病发病的主要原因。重病种子往往不能发芽,或萌发后不久幼苗即可死亡。轻病的种子长出的病苗徒长,比健株高出1／3,植株细弱,全株呈黄绿色,根系发育不良,部分病苗在插秧前后死亡。 Bad boy disease, also known as rice, from seedling to heading stage can occur. Fungi bacteria parasitic or attached to the seeds, seed carriers is the main reason for the incidence of diarrhea. Severe seeds often can not germinate, or seedlings can die shortly after germination. Sickly-grown seedlings grown sickly, more than 1/3 higher than the healthy plant thin, whole plant was yellow-green, root system dysplasia, some of the vaccine died before and after transplanting.