As the biggest agricultural country, China has abundant
biomass energy resource which mainly comes from crop
residues, firewood, forest wood residues and organic
refuses. About 0.75 billion tons of agricultural residues
are produced in 2010 [1] and this is equivalent to about
12,000 trillion kJ of energy. Of the biomass, the crop
residues is the biggest biomass resource, covering about
52% of the total biomass resource in China and the rice
straw biomass is about 62% of the total crop residues [1]
[2]. At present, crop straws are mainly used as fuel,
feedstuff, fertilizer and industrial raw material. According
to Resource Saving and Environmental Protection
Bureau of National Development and Reform Commission,
to promote comprehensive utilization of straw resources
and realize straw commercialization and resource
utilization is important to resource saving, pollution
abatement, farmer incomes increase and acceleration
of resource-saving and environmental-protection society
constructions. The State is studying relevant policies on
acceleration of comprehensive utilization of crop straws.
The comprehensive utilization rate of straw resources is
expected to exceed 80% in 2015