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试验表明，在海拔７２０ｍ的山区和海拔３３０ｍ的丘陵中稻区采用早晚稻混栽，可使双季稻的生育期缩短，有利于晚稻安全齐穗，并可获得１０５００ｋｇ／ｈｍ２以上的产量，比当地的中稻加再生稻显著增产，效益也好于常规双季稻。在北纬２６°Ｎ左右，海拔７５０ｍ以下的山区，利用抗稻瘟病、前期耐寒、分蘖力强的早稻与郴晚３号搭配，可推广种植混栽双季稻。
Tests showed that the combination of morning and evening rice in the hilly mid-elevation area of 720m and the mid-hilly area of 330m could shorten the growth period of double-cropping rice, which would be benefit for the safe heading of late rice and yield more than 10,500kg / hm2, The middle-grade rice plus ratoon rice increased significantly, the benefit was better than the conventional double-cropping rice. In the mountainous area with an elevation of about 26 ° N and an elevation of 750m, the hybrid rice with double blast rice can be popularized by using the combination of early rice with high resistance to cold and strong tillering ability and the combination of Chenyue No.3 with rice blast.