Looking ahead, controlling rice blast was in the case of N:P2O5:K2O,4:2:1 is better than others. Under this condition,quantity of fertilization from 210kg. hm-2 to 240kg.

• 从控制稻瘟病的角度来看,在N:P:K为4:2:1的情况下,施肥纯量为210-240kg/hm2最为适宜,稻瘟病发病程度最轻。