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本试验以4个不同甜高粱品种为试材,采用大田试验方法和室内考种方法,探讨不同甜高粱品种在再生栽培和正播栽培条件下生物学性状、生物产量的差异,结果表明:(1)正播栽培条件下不同甜高粱品种之间株高、单株分蘖数、伸长节、单穗鲜重、生物量及垂度值之间有差异,而且可以收获正常成熟的籽粒产量。(2)再生栽培的各品种第一茬和第二茬植株形态特征和生物量有差异。(3)再生栽培的各品种总生物量远高于正播栽培的总生物量。(4)再生栽培条件下,有些品种能够正常成熟,可以收获正常成熟的籽粒产量,有些品种不能正常成熟并不能够收获籽粒产量。(5)甜高粱品种在再生栽培条件下,单位面积上的总生物量远高于正播栽培的总生物量,供试的再生栽培的甜高粱品种当中,只有苏马克能够正常成熟,因此,苏马克可以作为推广再生栽培的首选品种。
In this experiment, four different sweet sorghum cultivars were used as materials to study the difference of biological characters and biological yield of different sweet sorghum cultivars under the conditions of either regenerative or sowing cultivation. The results showed that: (1 ) There was a difference between plant height, number of tillers per plant, tillers, fresh weight per head, biomass and sap value of different sweet sorghum cultivars in sowing condition, and the yield of normal mature grain could be harvested. (2) There were differences in morphological characteristics and biomass between the first crop and the second crop of regenerated cultivars. (3) The total biomass of regenerated cultivars was much higher than the total biomass of sowing cultivars. (4) Under the conditions of regenerative cultivation, some varieties can mature normally, the yield of normal mature grain can be harvested, and some varieties can not mature normally and can not harvest the grain yield. (5) Under the condition of regeneration cultivation, the total biomass of sweet sorghum cultivars was much higher than the total biomass of sowing cultivars. Among the sweet sorghum cultivars tested, only Sumak could mature normally. Therefore, Sumak can be used as a promotion of renewable cultivation of choice varieties.