The Volue Measures Of Agricultural Biomass Resources And Building Model For The Amount Prediction Research In Nanning

For the rapid development of economy, abundant supply of energy is one basic requirementhowever, these fossil energy will be exhausted soon after and its non-renewable, people have no choice but to seek new energy supply. Numerous countries attach importance to the development and application of agricultural biomass energy, our government has paid great attention to the development of planning for its industry, formulate a series of supportive policy file. Every year a large amount of livestock and poultry manure and crop straw produces in Nanning city, which is an important raw material of agricultural biomass. In this paper, utilize the Nanning City Statistical Yearbook from2005to2010as the basic data, combined with field investigation on the typical rural, calculates the crop straw and animal manure generation per year, analyzed the changes in species distribution, all kinds of agricultural biomass in recent years, in order to provide data supporting the role of material industry planning agricultural Nanning city. Based on the GM (1,1) model, it was used to predict the feces of livestock and poultry changes within the next few years, and use the methods of land load to carry the simple appraisal on these changes.The results show that:the straw reserves changes little from2004to2009in Nanning City, annual output remained is about3300000tons, which is sugarcane and rice straw, the contribution rate is more than60%, most of the planting crops is relatively stable, but the corn straw production increased from364000tonnes in2004to612900tons in2009, the increase of livestock and poultry is obvious; feces will reach18234900tons in2009; urban area of straw produced a total of1022500tons, the sugar cane bagasse, rod production capacity of499800tons, accounted for almost the entire amount of straw50%, second generation straw amount is the largest in Wuming County,746700tons; the content of organic matter in Nanning urban farming in the straw, a total of about153400tons, N P K content in the straw respectively6339.98tons,2556.39tons and14724.78tons; the next few years Nanning city pig manure equivalent increased from18063420ton in2010to19168890ton in2015, growth rate, the average farm manure load will be from26.11t/hm2to27.70t/hm2, the overall level. The harm Livestock and poultry manure on farmland is not serious.