两种菠菜累积硝酸盐特性差异的研究

• 作 者: 艾绍英 李生秀 唐拴虎 姚建武
• 机 构: 广东省农科院土壤肥料研究所!广东 广州 510640,西北农林科技大学资源与环境科学系!陕西 杨陵 712100,广东省农科院土壤肥料研究所!广东 广州 510640,广东省农科院土壤肥料研究所!广东
• 出 处: 土壤与环境
• 发表日期: 2000年04期
• 关键词: 菠菜 氮素吸收 硝酸盐累积和还原 spinach nitrogen absorption nitrate accumulation and reduction

水培试验结果表明，日本超能菠菜生长后期的生长量较大，硝酸盐累积量较低，氮素吸收量较少，可以肯定其优良性；在生长后期供给等量硝、铵态氮的条件下，日本超能菠菜吸收硝态氮较少，还原硝酸盐的相对能力又较高，因而累积硝酸盐较宁夏圆叶菠菜低；在仅供给铵态氮源的条件下，日本超能菠菜还原硝酸盐能力较小，可能与其易于吸收和利用铵态氮源有关。

The results of hydroponic culture showed that the growth of Japanese super capacity spinach was larger in the later growth stage, the nitrate accumulation was lower and the nitrogen absorption was less, which affirmed its goodness. In the later stage of growth, the same amount of nitrate and ammonium nitrogen Under the conditions, Japan’s super spinach to absorb less nitrate, relative reduction of nitrate and higher relative capacity, so the accumulation of nitrate is lower than the Ningxia round leaf spinach; ammonium nitrogen source only in the supply conditions, the Japanese super spinach The ability to reduce nitrate is less likely to be related to its ease of absorption and utilization of ammonium nitrogen sources.