中国农业大学学报2012，Vol.17Issue(6)：56-69,14.
甜高粱生产要素特征、成本及能源效率分析
Analysis of sweet sorghum's characteristic of production factor, cost and energy efficiency
摘要
Abstract
In order to summarize the varieties of sweet sorghum in China,production technology and the difference of production cost and energy efficiency in different areas,we carried out an analysis of sweet sorghum's variety characteristics,production technology,production cost and energy efficiency in cold areas(Inner Mongolia),arid areas(Xinjiang) and saline areas(Shandong) of sweet sorghum by literature research and field investigation based on the numerical and factor analysis method.The results showed that the varieties with growth period of 113-130 d,brix of 9.0%-16.0%,fresh straw yield of 31.2-64.7 t/hm2,plant height of 223.1-312.7 cm,stem diameter of 1.48-1.89 cm and grain yield of 2.07-3.39 t/hm2 accounted for the most.The variation coefficient of grain yield,straw yield and brix were 42.1%,50.5% and 41.9% respectively.Agronomic measures such as tillage,irrigation,fertilization,removing tillers,chemical spray and lodging-prevention all had significant effect on the yield of sweet sorghum.The result of factor analysis of production cost illustrated that the Kaiser-Meyer-Olkin measure of sampling adequacy was 0.84 and the value of Bartlett's sphericity test(P0.01) was 14 970;Three factors were extracted out and their variance contribution rates were 48.18%,41.66% and 6.78% respectively as well as accumulative contribution rate was 96.61% after being rotated.The comprehensive score of Inner Mongolia(-15.22) was the best.The energy of raw material for production of one ton anhydrous alcohol by using stem alone needed 2.7×103-7.4×103 MJ/t,and 1.4×103-3.9×103 MJ/t are consumed after comprehensive utilization.The energy output-input ratios were 4.0-10.9 and 7.6-20.7 respectively.Sweet sorghum is feasible as an energy crop,considering the economic cost and energy efficiency.Manual input and raw material were the most influential factor towards cost and energy efficiency respectively.Factor analysis comprehensive evaluation shows that factor cost has a significant difference among different regions.Balancing mechanical and manual input has an important significance to cost and energy efficiency in different regions.关键词
甜高粱/生产技术/生产成本/因子分析/能量投入Key words
sweet sorghum/production technology/production cost/factor analysis/energy input分类
农业科技引用本文复制引用
韩立朴,马凤娇,谢光辉,刘金铜..甜高粱生产要素特征、成本及能源效率分析[J].中国农业大学学报,2012,17(6):56-69,14.基金项目
国家科技支撑计划项目 （）
国家能源局能源节约和科技装备司项目 （）
