Study on Main Characteristics of Sweet Sorghum and Grain Sorghum

[Objective] The similarities and differences of main characteristics between the sweet sorghum and the grain sorghum were searched.[Method] Sweet sorghum T26,T37 variety,grain sorghum R123,LR198 variety were selected representatively.The growing trend,the botany character,the sugar content,the chlorophyll content,the breath speed were studied.[Result] The results showed that the sweet sorghum growth obviously surpassed the grain sorghum.The sugar content accumulation beginning and the total content were higher than the grain sorghum, but the sweet sorghum and the grain sorghum sugar accumulation general trend was consistent.Sweet sorghum biology yield was superiority,but grain sorghum ear of characteristic was superiority.In the physiological character,the chlorophyll content grain sorghum surpassed the sweet sorghum,but sweet sorghum was higher in the breath speed.[Conclusion] The function of the sweet sorghum and the grain sorghum was different,but the use was different.