Investigation of Crop Straw Resources and Energy Potential of Yunnan Province
Based on official statistical data and literature research,the straw resources of major crops(maize,rice,wheat,potato,oil and beans)in 2021 in 16 prefectures(cities)of Yunnan Province were investigated.The theoretical resources of crop straw were estimated by grass-grain ratio coefficient method,and the energy con-version potential of crop straw was assessed by standard coal coefficient method.The results showed that in 2021,the total crop straw resources,the theoretical resources and the total recoverable resources in Yunnan Province were 19.370 1,18.116 million tons and 17.317 million tons,respectively.The total energy utilizable resources was 1.666 million tons,and the estimated biomass energy potential was 840 000 tons of standard coal.The amount of crops straw resources in Yunnan Province is large,but the amount of crop straw resources that can be utilized for energy is low.