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１９９７ 年在浙江省东阳市进行了氮营养对杂交水稻５１８ 植株氮的浓度，吸收和生长影响的试验，叶片、茎和根的氮含量在有效分蘖至分蘖盛期最高，此后，逐渐下降直至成熟。叶片和茎是贮存库的最大贡献者。在稻穗中来源于叶片、茎和根的氮分别占３０ ％ ～３５ ％ ，１７ ％ ～３８ ％ 和６ ％ ～２０ ％ 。稻穗中的氮占总氮量的５８ ％ ～６０ ％ 。稻株对氮的吸收一直延续到成熟，在分蘖盛期、抽穗期和灌浆期氮的吸收率分别为１ ．３３ ～８ ．１７ ，１ ．５２ ～６ ．０３ 和０ ．０５ ～１ ．０２ ｋｇ·ｈｍ － ２·ｄ － １ ．
The effect of nitrogen nutrition on the nitrogen concentration, absorption and growth of hybrid rice 518 was studied in Dongyang, Zhejiang Province in 1997. The nitrogen content of leaves, stems and roots was the highest between the effective tillering stage and the tillering stage, and then gradually decreased until maturity . Leaves and stems are the largest contributors to the repository. Nitrogen from leaves, stems and roots in the panicles account for 30% -35%, 17% -38% and 6% -20%, respectively. The nitrogen in the panicle accounts for 58% to 60% of the total nitrogen. Rice plant nitrogen absorption continued until maturity, tillering peak, nitrogen absorption rate at heading and filling stage were 1. 33 ~ 8. 17, 1. 52 ~ 6. 03 and 0. 05 ~ 1. 02 kg · hm - 2 · d - 1.