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以丰产、适应性广的甘蔗栽培品种Ｃｏ４１９为母本，以大茎野生蔗（ＳａｃｈａｒｕｍｒｏｂｕｓｔｕｍＢｒａｎｄｅｔＪｅｓｗｉｅｔ）的Ｆ１代ＰＴ４３—５２为父本，经有性杂交选育出用作饲草的Ｃ４亚热带牧草新品系９４—４２。两年的试种表明，它是一种高产、优质、耐寒、耐旱、耐瘠、再生力强的多年生草本饲草作物，年可收刈３～４次，鲜草产量第１年为１１９．６３～１７９．５５ｔ／ｈｍ２，第２年为１５３．２１～１７１．６０ｔ／ｈｍ２；茎叶营养品质比栽培甘蔗好，在亚热带的福建省漳州市全年不抽穗开花，冬天不枯萎，可在一定程度上解决我国南方冬季和早春牛羊等草食动物的鲜草供应问题。
A high-yielding and adaptable sugarcane variety, Co419, was used as the female parent, and F1 generation PT43-52 of Sacharumrobustum BrandejJeswiet was used as the male parent. C4 subtropical forage New Line 94-42. Two years of trial shows that it is a perennial herbaceous forage crop with high yield, high quality, cold resistance, drought resistance, barren resistance and strong regenerative ability. The annual yield can be milled 3 to 4 times and the first year of fresh grass production is 119 .63 ~ 179.55t / hm2, the second year was 153.21 ~ 171.60t / hm2. The nutritional quality of stems and leaves was better than that of cultivated sugarcane. In the subtropical area of Zhangzhou City, Fujian Province, To a certain extent, solve the problem of fresh grass supply in herbivores such as winter and early spring in southern China.