水稻硅营养的研究——稻株内Si、P、N的平衡对有机碳积累的影响

• 作 者: 刘平 贺宁 熊远芳 何继英
• 机 构: 贵州农学院植物生理教研室,贵州农学院农学专业82级,贵州农学院农学专业82级,贵州农学院农学专业82级,
• 出 处: 贵州农学院学报
• 发表日期: 1988年01期
• 关键词: 稻株 Si 有机碳 营养浓度 抽穗期 砂培 营养水平 硅源 水平处理 偏相关系数

用Na_2SiO_3为硅源砂培水稻,其结果在硅营养浓度提高的条件下,稻株大量吸收SiO_2,却抑制了对P和N的吸收。在稻株的地上部份SiO_2％的含量与P%和N％的含量在一定生育期中呈显著负相关;而P％、N％的含量与C％的含量,在一定生育期中呈显著正相关。P/SiO_2和N/SiO_2与C的积累呈正相关。当N和Si的营养水平适当时。稻株内的N和SiO_2的含量均有提高。

Using Na_2SiO_3 as silicon source sand culture rice, the results showed that under the condition of increasing silicon nutrient concentration, rice plants largely absorbed SiO_2, but inhibited P and N absorption. There was a significant negative correlation between the content of SiO_2% and the content of P% and N% in certain part of the growth period of rice plants. However, the content of P% and N% had a significant positive correlation with the content of C% in certain growth period . P / SiO_2 and N / SiO_2 were positively correlated with C accumulation. When N and Si nutrition levels are appropriate. The content of N and SiO 2 in rice plants increased.