Effects of organic amendment and water regime on methane emission from rice fields

摘要

To evaluate the effects of irrigation and organ-ic matter on methane emission,experimentswere conducted on Aqu-paddy soil with pH6.2,24.16g·kg^(-1) of organic C,2.2g·kg^(-1)of total N,14.4 C mol·kg^(-1) of ECE,53%silt,and 43% clay on CNRRI farm.The plotarea was 5m×5m,and the experiment wasdesigned in a completely randomized block de-sign with 4 treatments and 3 replications.Thefour treatments were:local practice withoutgreen manure (T_1),intermittent irrigation(T_2),applying inorganic fertilizer with greenmanure and local practice irrigation (T_3,con-trol),and continuous irrigation(T_4).