Effects of Different Nitrogen Application on Yield and Its Component Factors of Rice

Tiejing7 was used to research the effects of different nitrogen application on yield and its component factors of rice, with three treatments of nitrogen application which was based on the different proportion of basal, tillering, panicle and granular fertilizer at the different nitrogen level. The results showed that actual yields of the variety Tiejing7 were highest, reaching 9 270.1 kg/hm2, on the condition that application amount of Nitrogen fertilizer is 255 kg/hm2 and the ratio of basal fertilizer and tillering fertilizer is 8:2. The higher number of productive ears and number of grains per ear lead to the high yield. However, actual yields of the variety Tiejing7 were higher, reaching 9 131.5 kg/hm2, on the condition that application amount of Nitrogen fertilizer is 210 kg/hm2 and the ratio of basal fertilizer and tillering fertilizer is 6:4. The higher number of grains per ear and thousand-grain weight contribute to the high yield. The yield variance of both treatments is almost indiscriminate.