The effects of different proportions of biochar applied on the properties of both yellow brown soil and red soil and on rape growth were explored using pot culture method.The results showed that after adding 1% biochar,both pH,available P,available K,organic matter content significantly increased than the control in both yellow brown soil and red soil,and the dry matter weight of the rape roots,stems,leaves,pods,grain were all increased.It was worth mentioning that the rape grain on yellow brown was increased 114.8% in contrast to the controlled,which reached a significant level.The N and P content of rape showed a downward trend,and the K content expressed an increasing trend when biochar was added.These nutrition content of rape changed more obviously in red soil than in yellow brown soil.The NPK accumulation of rape from two soils were significantly improved with adding biochar.In conclusion,the results showed that adding 1% biochar to soil can promote rape growth,and help the rape to absorb P,K nutrients.