低菌,高氧和形式对生长和生菜的营养质量的影响
Linwei Jia1, Yongkang Tang2, Ke Tian3
1College of Environment and Resources, Xiangtan University, Xiangtan 411100, China; National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing 100094, China.
Life sciences in space research
|January 20, 2024
概括
在低血压条件下,高氧显著抑制了生长. 高含量和酸盐与的比率为3:1提高了植物生长和营养质量.
科学领域:
- 植物生理学 植物生理学
- 环境科学 环境科学
- 农业科学 农业科学
背景情况:
- 了解植物对变化的大气条件的反应对于控制环境农业至关重要.
- 低氧和高氧症可以显著影响植物的生长和发育.
- 的形式和可用性是影响植物营养和质量的关键因素.
研究的目的:
- 为了研究hypobaria,hyperoxia和形式对生菜 (Lactuca sativa L. var. 变种) 的影响. 罗马) 增长和营养质量.
- 为了确定生菜种植的最佳大气压,氧气部分压和比.
- 评估不同含量和形式对植物生物质,矿物质含量和营养化合物的影响.
主要方法:
- 菜苗在受控条件下生长,总大气压 (101, 54, 30 kPa) 和氧气部分压 (21, 28 kPa) 变化.
- 植物的酸盐 (NO3N) 与 (NH4N) 的比例不同,含量有两种 (N1:0.1 g N kg-1,N2:0.2 g N kg-1).
- 分析了生长参数,生物质,叶绿素,胡卜素和矿物元素含量.
主要成果:
- 过氧 (28 kPa O2) 在低压条件下 (54 kPa 总压力) 显著抑制了生长,减少了多达69.9%的生物质.
- 高度 (N2) 和NO3N:NH4N比率为3:1显著提高了生菜的生长,矿物质含量 (N,P,K) 和营养质量.
- 低氧气 (54 kPa) 增加了N,P和K含量,而高氧气降低了有机碳含量.
结论:
- 过氧会在低温条件下对生菜生长产生负面影响,需要仔细的大气控制.
- 优化供应,特别是高度和3:1的NO3N:NH4N比率,对于提高生菜产量和营养价值至关重要.
- 这项研究为在有改变大气成分的受控环境中种植生菜提供了洞察力.
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