The methods of agricultural residues disposal and their externalities in Xinyi, China

摘要

The survey shows that there are mainly three methods of agricultural residues disposal in the Xinyi region. About 6.79×10~5 t of agricultural residues have been generated during the summer and autumn harvest in Xinyi in 2013, and 62% of them were burned in the field, 14.8% were thrown into cannels and rivers, and 20.7% were shredded and incorporated into soil. The burning of agricultural residues results in negative externalities by bringing large amounts of pollutant emissions. In order to reduce agricultural residues burning on the farmland and encourage the incorporation of crop residues into fields, the local government should give more subsidies to make the use of shredding machine free or at least cheap enough to be accepted by farmers in the future.