甜高粱茎秆不同储藏方式的比较研究

有效贮藏甜高粱茎秆是甜高粱燃料乙醇生产中的关键环节。以六环美迪甜高粱为实验材料,采用露天带叶平放、晾晒后露天带叶平放、露天带叶立放、自然生长状态下田间冷冻贮藏等4种不同方式对甜高粱茎秆进行储藏,考察其各自的茎秆糖分变化,并对储藏方式进行比较分析,确定最佳储藏方式。结果表明,晾晒与自然条件下冻储相结合可有效存储甜高粱茎秆。当甜高粱叶片含水量降低至37%后堆放存储时,茎秆含糖量损失较小。自收割至当年10月15日前,其含糖量由12.4%降低至11.8%,自10月15日到来年1月15日,其茎秆含糖量由11.8%降低至11.4%,但此种存储方式对在春暖时由酸败引起的糖分损失的抑制作用不明显。

Comparison on Different Sweet Sorghum Stalks Storage Approaches

It has played an important part for proper storage of sweet sorghum stalks in the production of fuel ethanol. In this study, different storage approaches of sweet sorghum stalks, including flat placement in open air with leaves, fiat placement in open air with leaves after drying, vertical placement in open air with leaves, and cooling storage in the field without harvesting, had been studied with Liuhuanmeidi as raw materials. The results showed that the combination of drying and cooling stroage in the field without harvesting was the most effectively approach for sweet sorghum stalks storage. When moisture content in stalks leaves dropped to 37 %, the loss of sugar was the minimum during the storage. Sugar content in the stalks could decrease from 12.4 % to 11.8 % in the period of 15 Sep. to 15 Oct., and from 11.8 % to 11.4 % in the period of 15 Oct. to 15 Jan. in the next year. However, such storage approach could not inhibit the loss of sugar inducecd by rancidity in the next spring.