Effects of Combined Application of Pig Manure Compost and Inorganic Fertilizers on Yield of Rice Grains and Nitrogen Use Efficiency

A field experiment was carried to study effect of combined application of pig manure compost(PMC) and inorganic fertilizers(IF) on yield of rice grains and nitrogen use efficiency.Results show that highest yield(8 595 kg·hm^-2) was obtained in Treatment PMC(1 500 kg·hm^-2)+IF,being about 57.8% and 13.6% higher than that in CK and Treatment IF,respectively,while nitrogen recovery rate ranged between 35.3% and 38.6% in all the PMC+IF treatments,but reached only 27.6% in Treatment IF.