Rice bakanae disease and rice seeding blight are major diseases to be solved urgently under organic culture.At present there is no effective method to control these diseases in china.There are less related research references.Under no pesticide,chemical fertilizer and nursery soil conditioner,the experiment was conducted by using physical method（hot water treatment） and EM.The results showed that it was safe for seeds treatment with 56℃ hot water for 10-15 minutes or 58℃ hot water for 10 minutes.This treatment had not affected germination and had effect on controlling of diseases.EM activated solution 50-150X and EM solution 500X have effect on increasing seedling growth and controlling of seedling blight