本研究从表现型、基因型和环境水平测定了蔗糖产量、蔗茎产量及其组分间的相关性,并进行了产量性状间的通径分析,结果表明:蔗茎产量、蔗茎蔗糖率两性状与蔗糖产量呈极显著的表现型正相关,而且两者对蔗糖产量的基因型直接效应也十分相近,但表现型和环境的直接效应则蔗茎产量比蔗茎蔗糖率的贡献要大一些,而蔗茎产量与蔗茎蔗糖率之间的表现型负相关未达到显著水准,茎数和单茎重构成蔗茎产量,而且两者对蔗茎产量表现出强的、正的、几乎相等的基因型、表现型直接效应、而茎数与单茎重之间存在极显著的表现型负相关;表现型、基因型、环境相关分剖的结果,组成单茎重的三因素中,都以茎径对单茎重贡献最大,茎长和比重的贡献较少,但各因素的贡献大小又因基因型或环境而异。 In this study, the sucrose yield, the yield of cane and its components were determined from the phenotype, genotype and environmental level, and the path analysis was conducted between the yield traits. The results showed that the yield of cane, The two traits were positively correlated with sucrose yield and the direct genotype effects on sucrose production were similar, but the direct effects of phenotype and environment had a greater contribution to cane yield than cane sucrose rate Some, while the negative correlation between the cane stem yield and the cane sucrose rate did not reach significant levels, the number of stems and single stems were reconstituted into cane yield, and both showed strong, positive, almost Equal genotypes and direct effects on phenotype. There was a significant negative correlation between stem number and single stem weight. Among phenotypes, genotypes, and environmental factors, Both stem diameter and stem diameter contributed the most to single stem, while stem length and specific gravity contributed less, but the contribution of each factor varied with genotype or environment.