【摘要】 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％。更多还原

【Abstract】 The relationship between fertilizer level and yield of double-cropping bilinear hybrid rice and nutritional characteristics of double-cropping biliner hybrid rice at different growth stages were studied. The results showed that for the yield reaching 8 430kg per ha, early biliner hybrid rice needed absorb 189.0kg N, 35.6kg P, 195.0kg K and 887.8 g Zn per ha, late biliner hybrid rice needed absorb 177.3kg N, 47.8 kg P, 201.0kg K and 817.8 g Zn per ha. At the same fertilizer level, early hybrid rice absorbed 6.60% N more than late biliner hybrid rice, late bilinear hybrid rice absorbed 34.00% P more than early biliner hybrid rice, and they absorbed. Comparied with three-line hybried rice, early bilinear hybrid rice needed 9.60% N and 6.90% P more, late bilinear hybried rice needed 46.00% P more, 25.7% N and 15.20% K less. In early growing stage, biliner hybrid rice absorbed 20%～50% NPK more than three-line hybrid rice did.更多还原