盐碱土壤施肥对甜高粱生物产量、糖锤度及相关性状的影响

为探究施肥对盐碱地条件下种植的甜高粱性状的影响,在大庆地区盐碱土壤条件下,研究施肥对3个甜高粱品种生物产量及含糖等相关性状的影响。结果表明:施肥对甜高粱生物产量、叶片数和出汁率均有极显著影响,对穗重有显著影响,品种与施肥处理之间互作对各性状均无显著影响。对甜高粱7个性状进行相关分析表明,叶片数与生物产量、株高、糖产量、糖锤度之间存在着极显著的相关性,出汁率与糖锤度存在负相关性。甜高粱生产上,应该根据品种的需肥特性,土壤、气候条件,目标性状来科学合理施肥。大庆地区应结合A1(磷酸二铵750.00kg·hm-2)和A4(磷酸二铵187.50kg·hm-2和硫酸钾187.50kg·hm-2)施肥,可提高甜高粱的生物产量、糖锤度和糖产量。

Effect of Saline Land Fertilization on Biomass,Sugar Brix and Related Traits of Sweet Sorghum

In order to explore the effects of saline-alkali land fertilization on the traits of sweet sorghum,taking three varieties of sweet sorghum in the saline-alkali land of Daqing area,the biomass,sugar brix and related traits of sweet sorghum were studied.The results showed that fertilization had extremely significant impact on biomass,leaves number and juice yield,and had significant effect on panicle weight.Interactions between the different varieties and fertilizer treatments had no significant impact on all traits.Correlation analysis of seven kinds of traits showed that there was a extremely significant correlation between the leaves number and biomass,as well as plant height,sugar yield and sugar brix,but there was a negative correlation between juice yield and sugar brix.Sweet sorghum production should be based on the fertilizer characteristics of different varieties,soil,climatic conditions and target traits to fertilizer scientifically and reasonably.The biomass and sugar content and yield of sweet sorghum could be improved combining with A1（750.00kg·hm^-2 phosphate diamine）and A4（187.50kg·hm^-2 phosphate diamine and 187.50kg·hm^-2 potassium sulfate）fertilization in Daqing area.