12个海州常山种源间的热值对比分析

海州常山是一种适应性强、生长迅速的多用途木本植物,为探讨其作为生物质能原料树种的可行性,采用弹氧热值分析仪和直接灰分测定法,分析了海州常山12个种源的木质材料热值和灰分含量,试图评价海州常山种源间热值的差异,以便为海州常山生物质能原料优良无性系选择奠定基础。结果表明：海州常山种源间木质材料的平均热值为15.25 kJ/g,与杨树（I-107）1年生枝条（热值为15.34 kJ/g）相当,低于刺槐（18.45 kJ/g）;海州常山种源间的热值差异较大,变异幅度3%,说明开展种内生物质能种源选择和无性系选择具有较大潜力;海州常山1年生的枝条灰分含量很少,矿质含量低,具有作为生物质能原料的优良条件。

Comparison and Analysis of Caloric Value in the Branch of 12 Different Provenances Clerodendrum trichotomum Thumb

Clerodendrum trichotomum Thumb. is a kind of multi-purpose woody plant which grows quickly and has well-adapted ability. In order to discuss the feasibility of being biomass raw materials, caloric value and ash content in 1 year branch of 12 different provenances C. trichotomum Thumb. were measured respectively by the oxygen bomb combustion analyzer and method for determination of ash. The caloric value of 12 different provenances C. trichotomum Thumb.＇ s was evaluated. The resuhs would provide a foundation for selecting excellent clone. The results proved that the average calorific value of the 12 different provenances was 15.25 kJ/g which did not vary much from the annual branches of the poplar （Populus×euramericana ＇Neva＇, 1-107） whose calorific value was 15.34 kJ/g, but was lower than that of the Robinia pseudoacacia （18.45 kJ/g）. The calorific-value＇ s discrepancy between 12 provenances was large and its variation amplitude was 3%. It showed that C. trichotomum Thumb. could be selected as biomass energy as the branches contained little ash.