4Ali M. 1999. Evaluation of green manure technology in tropical lowland rice systems[ J ]. Field Crop Res., 61 : 61 ～ 78.
5Ashraf M, et al. 2004. Comparative effects of applying leguminous and non-leguminous green manures and inorganic N on biomass yield and nitrogen uptake in flloded rice (Oryza sativa L. )[J ].Biol. Fert. Soils, 40:147～ 152.
6Stopes C, Millington S, Woodward L. 1996. Dry matter and nitrogen accumulation by three leguminous green manure species and the yield of a following wheat crop in an organic production system[J]. Agr . Ecosyst . Environ., 57:189～ 196.
