China has a large population and relative shortage of energy and resources, the problem of energyshortage has become the bottleneck of sustainable development of social economy. At the same time,living standards of farmers have improved a lot, and their demand for high grade and clean energy isincreasing, which further intensifies the national energy supply pressure. China as a vast agriculturalcountry, its straw resources has a characteristic of variety, large and wide distribution. However, a lot ofstraws...