| 摘要: |
| 测定分析营养液加硒后水培生菜产品器官茎叶品质指标的变化，与未加硒的对照相比，加硒０．４ｍｇ·Ｌ＾－１促进了水培生菜植株吸收Ｎ和Ｐ，但抑制了对Ｋ，Ｎａ，Ｃａ，Ｍｇ，Ｆｅ，Ｍｎ，Ｃｕ，Ｚｎ的吸收；提高了茎叶中总糖、还原糖、叶绿素、维生素Ｃ的含量；降低了亚硝酸盐和三种游离氨基酸的含量，游离氨基酸总量在奶油生菜和红叶生菜分别降低５．４１％和８．２８％，玻璃生菜提高了３．０４％；蛋白氮水平前两者升高而后者降 |
| 关键词: 硒素 水培 生菜 品质 营养液 |
| DOI： |
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| Effect of Selenium on Quality of Hydroponics Lettuce |
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| Abstract: |
| As the result of selenium supplement on nutrient fluid, quality indexes of stems and leaves of hydroponics lettuce changed compared with the check without selenium. Se-lenium at 0. 4 mg .L-1 enhanced the absorption of N and P, depressed the absorption of K,Na, Ca, Mg, Fe, Mn, Cu, Zn, improved the content of total sugar, reducing sugar,chlorophyll and vitamin C in stems and leaves, decreased the content of nitrite, coarse fiber and three free amino acid such as Cys, Met and Tyr. The content of free amino acid decreased 5. 41 % and 8. 28% respectively in butter lettuce and red leaf lettuce, while in-creased 3. 04% in glass lettuce, it indicated that effect of selenium on protein metabolism differed among different varieties. |
| Key words: selenium,hydroponics,lettuce,quality |
