超级杂交稻两优培九的营养特性研究

在田间试验条件下,对超级杂交稻两优培九各生育阶段的养分吸收特性进行了研究和分析.结果表明,两优培九在分蘖、拔节、孕穗和抽穗结实期的养分吸收量占总吸收量的比率,氮为46.7%,10.3%,17.8%和15.6%,磷为46.5%,17.8%,24.7%和8.3%,钾为54.7%,9.2%,20.8%和11.3%;平均每生产其1 000 kg稻谷需吸收氮16.0 kg、磷3.9 kg、钾 20.9 kg.

Studies on Uptake Characteristics of Nutrients in Super Hybrid Rice Liangyou Peijiu

The uptake characteristics of nutrients at different growth stages of the super hybrid rice combination Liangyou Peijiu were studied on field experimental conditions. The results showed that the percentages of the absorbed nutrient quantity to the total value in tillering, shooting, booting and grain filling stages were 46.7%, 10.3%, 17.8% and ~15.6 % for nitrogen, 46.5%, 17.8%, 24.7% and 8.3% for phosphorus, and 54.7%, 9.2%, 20.8% and 11.3% for potassium. To produce 1 000 kg of grains (rough rice), 16.0 kg of nitrogen, 3.9 kg of phosphorus and 20.9 kg of potassium were needed to be absorbed in the production of the super hybrid rice combination Liangyou Peijiu.