氮肥运筹管理是水稻生长调控的重要因素之一,试验以龙粳31为试验材料,在总施氮量不变的情况下,通过设置4种生育前后期不同比例的氮肥用量,对比研究不同氮肥运筹比例对水稻生长、产量的影响。结果表明:适当的前氮后移施肥方式(N1处理∶基蘖肥∶调节穗肥=6∶4),能减少无效分蘖提高分蘖率、增加水稻叶面积指数、叶绿素含量、促进干物质的积累,从而提高水稻的产量。同时N1处理有效穗数、穗粒数、结实率和千粒重均较高,所以产量高达10.66 t/hm2,比N4处理高出11.35%,差异达显著水平,促进水稻产量潜力的发挥。 Nitrogen fertilizer operation and management is one of the most important factors in the regulation of rice growth. Longjing 31 was used as experimental material. Four nitrogen fertilizers with different proportions before and after growth were used to study the effect of different nitrogen fertilizers Effect of Operational Ratios on Rice Growth and Yield. The results showed that proper nitrogen fertilization (N1 treatment: basal tillering fertilizer: adjusting panicle fertilizer = 6: 4) could reduce inefficient tillers and increase tillering rate, increase leaf area index and chlorophyll content of rice, and promote the accumulation of dry matter , Thus increasing the yield of rice. At the same time, the number of panicles, grains per spike, seed setting rate and grain weight per hectare of N1 were higher, so the yield was as high as 10.66 t / hm2, which was 11.35% higher than that of N4 treatment. The difference reached significant level and promoted the yield potential of rice.