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采用田间试验方法研究了施肥水平与双季两系杂交稻的产量关系，以及不同生育阶段的营养特征。结果表明：两系杂交早稻产量为８４３０ｋｇ／ｈｍ２，需吸收氮１８９ｋｇ、磷３５．６ｋｇ、钾１９５ｋｇ、锌８８７．８ｇ。两系杂交晚稻产量为８４３０ｋｇ／ｈｍ２，需吸收氮１７７．３ｋｇ、磷４７．８ｋｇ、钾２０１ｋｇ、锌８１７．８ｇ。同一施肥水平，两系杂交早稻吸Ｎ量高于两系杂交晚稻６．６０％，两系杂交晚稻吸Ｐ量高于两系杂交早稻３４．００％，吸Ｋ量基本相近。两系杂交稻与三系杂交稻比较，两系杂交早稻需Ｎ、Ｐ高出９．６０％和６．９０％；两系杂交晚稻需Ｐ高出４６．００％，但需Ｎ、Ｋ量却分别低２５．７０％和１５．２０％。两系杂交稻在生育前期对Ｎ、Ｐ、Ｋ的吸收明显高于三系杂交稻２０．００％～５０．００％。
Field experiment was conducted to study the relationship between the fertilization level and the yield of two-season two-line hybrid rice and the nutritional characteristics of different growth stages. The results showed that the yield of early two-line hybrid rice was 8430kg / hm2, with absorption of 189kg of nitrogen, 35.6kg of phosphorus, 195kg of potassium and 887.8g of zinc. Two-line hybrid late rice yield 8430kg / hm2, need to absorb nitrogen 177.3kg, phosphorus 47.8kg, potassium 201kg, zinc 817.8g. At the same fertilization level, the amount of N uptake by two-line hybrid rice was higher than that of two-line hybrid rice by 6.60%. The P uptake by two-line hybrid rice was higher than that of two-line hybrid rice by 34.00%. Compared with three-line hybrid rice, two-line hybrid rice required 9.60% and 6.90% of N and P, respectively. The two-line hybrid rice needed a 46.00% higher P, but N and K But were 25.70% and 15.20% lower respectively. The uptake of N, P and K in two-line hybrid rice at early growth stage was significantly higher than that of three-line hybrid rice by 20.00% -50.00%.