Effect of different application methods of nitrogen fertilizer on the yield and quality of late rice by intensified cultivation with no-tillage

With the same application of phosphate and potassic fertilizer,the effect of different application methods of nitrogen fertilizer were studied on the yield and quality of late rice by intensified cultivation with(no-tillage).The results showed that the yield of late rice was increased with the increase of nitrogen application rate at 135kg/hm~2,165 kg/hm~2 and 225 kg/hm~2.The yield of rice was the highest when the ratio of applying nitrogen in basal fertilizer∶ tillering fertilizer∶ panicle fertilizer∶ grain fertilizer was 50∶20∶20∶10 at higher nitrogen level(225kg/hm~2).At low and medium nitrogen level(165kg/hm~2,135kg/hm~2),the highest yield was obtained at the ratio of 50∶10∶30∶10;the production benefit was better when the ratio of nitrogen was 50∶10∶30∶10 by applying nitrogen 165kg/hm~2.