薪炭植物特征分析及其评选

FUEL PLANTS'ANALYSIS AND SELECT ON THROUGH ASSESMENT

在分析薪炭植物热值、产薪量以及抗旱性等指标的基础上，对９种薪炭树种进行了综合评价．结果表明植物之间产薪量指标变异最大，而热值指标变异最小．从而进一步阐明产薪量是选择薪炭植物最重要的指标，一般依据产薪量的高低可取得较好的选择效果．表明沙棘、柠条和刺槐是黄土丘陵区解决农村生活用能的优良树种，其中沙棘最优；在营造薪炭林的同时，沙打旺、红豆草等优良薪炭草本植物的能源作用亦是不可忽视的。

On the basis of indices analysis such as calorific value,fuel yield and drought resistance,nine fuel trees were comprehensively assessed.The results showed that the coefficient of variation in fuel yield was the highest,whereas that in calorific value the lowest.Thus it was further clarified that fuel yield was the most important index to select excellent fuel plants,on which a good effect of selection might be obtained generally.It was indicated that Hippophae rhamnoides,Caragana microphylla and Robinia Pseudoacacia were excellent fuel trees to solve energy on which Peasants live in the loess hilly area,of which Hippophae rhamnoides was the most excellent; When fuel forests would be constructed,it might not be ignored that growing excellent fuel grasses,such as Astragalus adsurgens and Onobryhis visiaefolis,were significant in energy resources.