Study On The Efficiency Of Recycling Of Crop Straws

The straws of crops are the biggest recycling resource in the world, and our country boasts the largest number around the world. Due to irrational use, we not only waste the precious recycling resource, and also affect the eco-environment. This thesis has evaluated the economic efficiency, the ecological efficiency and the social efficiency of using straws as feed, fertilizer, gas, gasification, power generation, building materials from the point of using straws as a resource. Moreover, the thesis also put out the program of optimizing the use, in order to motivate the progress of using the crop straws in a rational way in our country. This thesis mainly includes the following five parts:The first part is an introduction. This part has demonstrated that the fossil energy is on the road from short supply to disappearance and we should try our best to develop the resource of Biomass, which mainly includes straws. And it also reviewed the development of the research of use of resource of straws at home and abroad from all aspects.The second part is the method of research. Based on the large number of literature and under the guidance of ideas of recycling economy, I have put out the system of evaluating the efficiency of using straws, and appealed to the fuzzy comprehensive evaluation method to calculate according to the use of straws as feed, fertilizer, gas, gasification, power generation.The third part is the result. Based on field study, I have got the indicators of evaluation of efficiency and the matrix of fuzzy evaluation, and then I have achieved the result of evaluation of efficie ncy of the use of straws. The fourth part is discussion. I discussed the result of evaluation from three aspects: economic efficiency, ecological efficiency and social efficiency. Through the comparison of six programs, I have got the best way to optimize the use and develop efficiency.The fifth part is the conclusion. I concluded the main achievements of this thesis and the job that needs to do in the future.