The Effect of Nitrogen Application Stage and Amount on Growth and Yield of Rice

[Objective]The study aimed to provide the references on nitrogen rational utilization.[Method]With the Xinliangyou NO.6 as test material,took field plot as the method,set up 7 treatments,the effects of nitrogen application stage and amount on growth and yield of rice were studied in the conditions of equivalent nitrogen.[Result]There was a rapid growth in early growth and overground part,and it was easy to make vigorous vegetative growth when base fertilizer proportion was too high;higher tillering fertilizer and panicle fertilizer could promote the rice growth in late stage,keep root activity and enhance root quantity,make the vegetative growth and reproductive growth of rice keep balance; it could satisfy the demand to nutrients in rice late growth,increasing filled grain number per panicle and 1000 -grain weight,and improving the yield based on decreasing the base fertilizer proportion and enhancing tillering fertilizer and panicle fertilizer can.[Conclusion] Treatment⑦(took N as base fertilizer + took N as tillering fertilizer + took N as panicle fertilizer) had the highest yield at hillside land in Chaohu basin.