[Response of Yield, CH, and NO Emissions from Paddy Fields to Long-term Elevated CO Concentrations].

Elevated atmospheric CO concentrations([CO]) are the main driving force of global climate change, which directly and indirectly affect carbon and nitrogen cycling in the paddy ecosystems. Therefore, understanding the response of rice yield and greenhouse gas emissions to long-term(more than 10 years)[CO] from paddy fields is of great significance for food security and future climate change assessment. In this study, strongly and weakly responsive cultivars were used as the experimental materials.