高粱—苏丹草杂交种的应用可行性研究及其选育

The feasibility research of breeding and application of Sorghum Sudan grass hybrids

利用生产上推广的6 个粒用高粱杂交种和4 个甜高梁杂交种为对照,与随机组配的15个高粱—苏丹草杂交种进行比较。结果表明,高粱—苏丹草杂交种做饲用在生产能力上仅次于甜高粱杂交种,但在早熟优质等若干特性上优于甜高粱,有些组合还高于甜高粱杂交种的生产能力。该类型杂交种干物质及绿色体的日生产能力高于甜杂2 号21.1% 和41.2% ,原因是杂种优势最高。其干物质积累分配规律与甜高粱杂交种相等。在种植上以留蘖为宜,可多次刈割,用作大牲畜及鱼的饲料。在利用上可干饲、青贮和青饲。干草营养成分优于苏丹草,为了进一步提高品质和产量可对苏丹草进行改良,能收到更好效果。

Fifteen Sorghum Sudan grass hybrids that were random combined with four grain sorghum hybrids were companed with sweet sorghum hybrids that had been popularized in production. The resuits showed that the production capacity of Sorghum Sudan hybrids used as fodder was lower than sweet sorghum hybrids, but better in some aspects, such as early maturing, high quality, etc. Some hybrids were betler than sweet sorghum hybrids in production capacity. Diurnal production capacity of dry matter and green parts of Sorghum Sudan hybrids were higher than “TianZa 2” 21.1% and 41.2% hybrid respectively because of the maximum hybrid vigor. The law of dry matter accumulation and distribution of Sorghum Sudan grass were equal to those of sweet sorghum hybrids. The practices of retaining tillow, cuting repeatedly, feeding fish or large livestocks. It could with fodder were sugyested, be used as dry fodder, silage and green fodder. The nutritive composition of dry grass was better than Sudan grass. In order to improve quality and increase output, the Sudan grass might be improved. It would get well effect.