Analysis and evaluation of utilizable resources of main crop straw in Jilin province.

Based on data analysis and field survey,the study chooses various evaluating indices to finish the research and evaluation on main crop straw in Jilin province.The results showed that the amount of utilizable resources of main crop straw of corn,rice and soybean amounted to 31.133 7 million tons in Jilin province in 2008 and the resources were characteristic of being "onehigh,two-low",that is,a higher proportion of corn and a low proportion of rice and soybean;spatial distribution was characteristic of "two-high and one-low",that is,"high in central and western regions,low in eastern region".According to resource distributing characteristics in each region,the whole province was divided into rich region,relatively-rich region,moderate region and poor region.The paper put forward the corresponding directions of development and utilization according to different regions.