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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).
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 total N, 14.4 C mol · kg -1 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. The treatment treatments were: local practice without green 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).