Main economic characteristics of 17 japonica rester Χ WCVs and japonica Χ Erjiufeng crosses were observed and analysed.It was shown that: 1) Rate of seed setting of sub-indica Dular Χ japonica and indica Erjiufeng（WCVs）Χ japonica were higher than that of indica Χ japonica.Some crosses can seed set normally. 2) There were strong economic heterosis,spacial effective tillers and total grains per panicle in the former crosses. 3) It was important measure that heterosis of indica Χ japonica in scientific breeding that WCVs were used.