Results show that CO_2 flux and energy partitioning are influenced by crop growth,both of rice paddy and wheat field are the sink of CO_2,and the maximum CO_2 flux absorbed by rice paddy exceeded 2 mg m~(-2)s~(-1).

• 结果表明:CO2通量、能量分配受地表农作物长势影响明显；其中；水稻灌浆、成熟期；被稻田吸收的CO2通量最大可超过2 mg.