9DORDAS C A,LITHOURGIDIS A S, MATSI T,et al. Application of liquid cattle manure and inorganic fertilizers affect dry matter, nitrogen accumulation, and partitioning in maize [ J ]. Nutr Cycl Agroecosyst, 2008,80:283 -296.
10PHONGPAN S,MOSIER A R. Effect of crop residue management on nitrogen dynamics and balance in a lowland rice cropping system [ J ]. Nutr Cycl Agroecosyst,2003, 66 : 133-142.