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以中粳武育粳 3号为材料 ,研究不同施氮量对稻株吸收和产量形成的影响 ,并对公式计算的总施氮量进行验证 ,结果表明 ,植株吸氮量随着施氮量的增加而增加 ,氮肥当季利用率有一个适宜值 ,应用斯坦福公式能较正确计算施氮量。在本试验获得 10 5 0 0kg/hm2 产量条件下 ,每 10 0kg稻谷吸氮量为 2 .11kg ,氮肥当季利用率为 4 2 .0 %。
The experiment was conducted to investigate the effects of different nitrogen application rates on rice plant absorption and yield formation by using Zhongyou Wuyujing 3 as experimental material. The total nitrogen application calculated by the formula was also validated. The results showed that the nitrogen uptake by plants increased with N application rate Of the increase in the use of nitrogen fertilizer season has an appropriate value, the application of Stanford formula can more accurately calculate the amount of nitrogen. In this experiment to obtain 10 5 0 0kg / hm2 yield conditions, the amount of nitrogen per 10kg paddy to 2.11kg, quarter nitrogen utilization rate of 42.2%.