QI Jingwei,WU Zhanhui,LIU Mingchi,et al.Effect of Different Nutrition Solution Concentrations on Growth of Lettuce Under LED Light Condition[J].Northern Horticulture,2015,39(18):67-70.[doi:10.11937/bfyy.201518017]
LED灯光照条件下营养液浓度对生菜生长的影响
- Title:
- Effect of Different Nutrition Solution Concentrations on Growth of Lettuce Under LED Light Condition
- 文献标志码:
- A
- 摘要:
- 以奶油生菜为试材，在LED灯光照条件下水培生菜，研究了不同营养液浓度（日本山崎生菜配方的EC值0.8、1.0、1.2、1.4、1.6、1.8 mS/cm）对生菜生长的影响。结果表明：1.0 mS/cm和1.2 mS/cm营养液浓度处理下奶油生菜地上部鲜重和干重、根鲜重和干重、叶片长度及叶片数最大，而1.8 mS/cm处理上述指标最小。生菜体内的硝酸盐积累量随着营养液浓度的提高而增加。综合分析，EC值在1.0～1.2 mS/cm水培生菜效果最佳。
- Abstract:
- Taking butter head lettuce as experimental material，effect of different nutrition solution (0.8 mS/cm，1.0 mS/cm，1.2 mS/cm，1.4 mS/cm，1.6 mS/cm，1.8 mS/cm) Yamazaki formula on growth of lettuce were studied under the LED light conditions.The results showed that plants had maximal fresh and dry weight of shoots and roots，leaf length and the number of leaves under 1.0 mS/cm and 1.2 mS/cm concentration treatments；while those were the lowest under 1.8 mS/cm.It indicated that nitrate accumulation of lettuce increased with increasing of nutrient solution concentration.Based on the comprehensive analysis，EC value in 1.0-1.2 mS/cm was the optimal concentration for hydroponic lettuce.
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备注/Memo
第一作者简介：齐敬伟（1989-），女，硕士研究生，研究方向为园艺学。E-mail：qqijingwei@163.com.责任作者：李青云（1969-），女，博士，教授，硕士生导师，现主要从事园艺设施与蔬菜栽培生理等研究工作。E-mail：yylqy@hebau.edu.cn. 基金项目：国家“863”计划资助项目（2013AA103005-03）；国家科技支撑计划资助项目（2014BAD05B05-04）；北京市农林科学院设施蔬菜无土栽培科技创新团队建设资助项目(2013-2015)；北京市农林科学院科技创新基金资助项目（CXJJ201306）；农业部公益性行业科研专项资助项目（201303014-03）。