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农学学报

农学学报 ›› 2017, Vol. 7 ›› Issue (5): 28-32.doi: 10.11923/j.issn.2095-4050.cjas16120018

所属专题： 园艺

• 林学 园艺 园林 食用菌 • 上一篇    下一篇

低硝酸盐叶菜水培营养液配方优选

郭敬华,董灵迪,焦永刚,石琳琪,赫彩霞,杨玉波   

  1. 河北省农林科学院经济作物研究所,河北省农林科学院经济作物研究所,河北省农林科学院经济作物研究所,河北省农林科学院经济作物研究所,河北省农林科学院经济作物研究所,河北省农林科学院经济作物研究所
  • 收稿日期:2016-12-19 修回日期:2017-03-20 接受日期:2017-04-06 出版日期:2017-05-26 发布日期:2017-05-26
  • 通讯作者: 石琳琪 E-mail:xiao722
  • 基金资助:
    河北省农林科学院青年基金项目(A2015050302)；河北省现代农业产业技术体系“冀南棚室蔬菜优质安全综合技术集成” (HBCT2013050203)；石家庄市科学技术研究与发展计划项目“雾霾天气对设施蔬菜影响及应对方案研究”(151490362A)；国家大宗蔬菜产业技术体 系石家庄综合试验站项目(GARS-2S-G-05)；河北省财政厅项目“设施蔬菜绿色安全生产技术集成与示范”(2016024196)。

Optimum Formula of Hydroponic Nutrient Solution for Low Nitrate Leaf Vegetables

  • Received:2016-12-19 Revised:2017-03-20 Accepted:2017-04-06 Online:2017-05-26 Published:2017-05-26

PDF (PC)

1733

摘要： 为研究叶菜中硝酸盐含量高的问题，利用营养液膜栽培技术(NFT)，采用不同营养液配方对不同种类叶菜的产量及品质进行测试。结果表明：配方3(Mg2 含量最高)营养液培育的生菜产量最高，产量可达17556 kg/hm2.茬，较其他2种配方相对增产率分别为133.3%、171.42%。配方3培育的生菜根体积、叶绿素含量、总鲜重、叶片数、植株干重等指标明显优于其他配方。通过测试品质指标，得知配方3营养液培育的生菜硝酸盐含量最低，为745.46 mg/kg，分别较配方1（K 含量最高）、配方2（Ca2 含量最高）降低77.01%、79.78%。配方3营养液培育的生菜Vc含量最高，分别较其他2种配方提高22.36%、78%，且糖酸比明显提高，有效提高了生菜的品质。综合品质指标、生物学指标及产量测定结果，得出配方3营养液最适合培育生菜、油菜、油麦菜等叶菜，为优选出的最佳叶菜水培营养液配方。

关键词: 青稞, 青稞, 燕麦镰孢菌, 叶片和根系, 生理指标

Abstract: To solve the problem of high nitrate content in leaf vegetables, this research used NFT (nutrient film technique), different kinds of leaf vegetables yield and quality was tested by using different nutrient solution formula. The results showed that lettuce yield was the highest by using the nutrient solution of formula 3（the highest content of Mg2 ）, each crop area could reach 17556 kg/hm2，the relative increase rate reached 133.3% and 171.42% respectively which was compared with other two kinds of formula. The root volume, content of chlorophyll, total fresh weight, leaf number, plant dry weight of lettuce index was better by using formula 3 than the other two kinds of formula. Quality testing results showed that nitrate content of lettuce was 745.46 mg/kg which was the lowest by using nutrient solution formula 3, and nitrate content of lettuce reduced by 77.01% and 79.78% respectively than the other two kinds of formula (the highest content of K and Ca2 ). cultivation Vc content of the lettuce was the highest by using nutrient solution formula 3 which increased by 22.36% and 78% respectively compared with other two kinds of formula, and the sugar acid ratio increased significantly which could improve the quality of lettuce effectively. Comprehensive results of quality indicators, biological indicators and yield, we obtained formula 3 nutrient solution which was the most suitable for cultivating leaf vegetables such as lettuce, rapeseed and leaf lettuce, it was the optimum leaf vegetables hydroponic nutrient solution formula. Key words: Leaf Vegetables; Hydroponic Nutrient Solution; Low Nitrate

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