Effect of wheat-residue returning and N-fertilizer application on yield and quality in rice

The effects of different N-fertilizer and wheat-residue on rice yield and quality were researched by using Japonia rice Huaidao 9 as materials.The results showed that the rice yield was increased by the straw residue,and per panicles,percentage of ripened grains and 1 000-grain weight were increased.Brown rice,milled rice,head milled rice and the length/width were increased by wheat-residue,and chalky grains and chalkiness were decreased.With N-fertilizer amount increasing,rice yield was increased and grain quality got better.And rice yield was the highest and the grain quality was the best of all under MN.