南宁市农业生物质资源存量估算与评价

【目的】分析南宁市农业生物质资源存量，评价其应用价值，为新能源的开发利用和农村环境污染综合治理提供决策依据。【方法】查阅南宁市统计年鉴数据，结合实地调查和参考已有的研究成果，确定草谷比参数和畜禽粪便排放参数及其估算方法，估算南宁市农业生物质资源存量。【结果】南宁市全年秸秆产量约330万t，其中甘蔗与稻谷秸秆占60％以上；畜禽粪便猪粪当量由2004年的1683．36万t增长到2009年的1823．69万t，以猪粪当量计，畜禽粪便产生量最大的是牛，而增长最快的是家禽，在数年中产生量几乎翻一番；将2009年南宁市秸秆和畜禽粪便均折算为标准煤，总计量为951．43万t，作为资源具有较大的利用潜力。【建议】政府应采取有效措施，响应国家新能源规划，开发适合地方应用的新工艺，推广现有较成熟技术的应用，促进南宁市农业生物质的产业化发展。

Stock estimation and evaluation of agricultural biomass resources in Nanning City

[Objective ] According to the agricultural biomass stock and its utilization evaluation, this research provided references for development and exploitation of new energy and comprehensive treatment of rural environmental pollution. [Method]Based on the data from Nanning Statistical Yearbook, field surveys and research results, the ratio of grass to grain, and the approaches and parameters for estimating annual quantity of poultry excrements and stock were defined to estimate the current stock of Nanning agricultural biomass. [Result]Among the straw yield of 3.3 million tons one year in Nanning, the yields from cane and rice accounted for more than 60%. The pig manure equivalent amount of livestock manure increased from 16,833,600 tons in 2004 to 18,236,900 tons in 2009. The largest pig manure equivalent was cattle, and the yields from poultry went up fastest, which almost doubled over several years. The straw and animal manure were converted into standard coal as 9,514,300 tons in 2009, in which the amount of animal manure conversion was 7,823,600 t. Thus it was of great utilization potential as a resource. [Suggestion]Against the backdrop of national new energy planning, industrializa- tion development of agricultural biomass in Nanning will be accelerated as long as the authorities introduce effective measures to develop location-friendly new techniques and promote mature technology application.