高粱 (Sorghumbicolor (L .)Moench)、苏丹草 (Sorghumsudanense (Piper)Stapf)属高粱属植物中的不同种 ,但它们的染色体数 ( 2n)均为 2 0 ,杂交不存在遗传障碍。由于两者的遗传关系较远 ,性状差异很大 ,杂交后的F1结合了二者的优点 ,表现出了强大的杂种优势 ,叶宽、叶长、分蘖等主要经济性状接近高亲 ,株高则超过高亲 ,生物产量比高粱和苏丹草增产 5 0 %～ 10 0 %。高粱—苏丹草杂交种还具有抗逆性、抗病性强 ,品质好 ,适口性好等特点 ,是养鱼业、牛羊养殖业等的优良饲草 ,加强开发利用 ,对我国的农牧业生产将产生积极的影响 Sorghum bicolor (L.) Moench and Sorghumsudanense (Piper) Stapf belong to different species of Sorghum, but their number of chromosomes (2n) are all 20, so there is no genetic obstacle to hybridization. Due to the far-reaching genetic relationship between the two, the traits vary widely. After hybridization, F1 combines the advantages of the two and shows strong heterosis. The main economic traits such as leaf width, leaf length and tillering are close to high progenies and plant height More than the high pro-biological yield than Sorghum and Sudan grass yield 50% ~ 100%. Sorghum - Sudan grass hybrids also have resistance, resistance to disease, good quality, palatability and good characteristics, is the fish farming, cattle and sheep farming and other excellent forage, to strengthen the development and utilization of China’s agriculture and animal husbandry Production will have a positive impact