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中国农学通报 ›› 2017, Vol. 33 ›› Issue (16): 36-40.doi: 10.11924/j.issn.1000-6850.casb16060134

所属专题: 园艺

• 林学 园艺 园林 • 上一篇    下一篇

NH4 -N 与NO3 --N 不同配比对菠菜 生长及食用品质的影响

薛强,何鹏,王倡宪   

  1. 黑龙江大学农业资源与环境学院,黑龙江大学农业资源与环境学院,黑龙江大学农业资源与环境学院
  • 收稿日期:2016-06-26 修回日期:2016-07-31 接受日期:2016-08-23 出版日期:2017-06-08 发布日期:2017-06-08
  • 通讯作者: 王倡宪
  • 基金资助:
    实验室开放项目“NH4 -N与NO3 --N不同配比对菠菜硝酸盐含量的影响”(15K135)。

Effects of Different Proportions of NO3 --N and NH4 -N on Growth and Edible Quality of Spinacia oleracer L.

  • Received:2016-06-26 Revised:2016-07-31 Accepted:2016-08-23 Online:2017-06-08 Published:2017-06-08

摘要: 为探究氮素形态对菠菜生长和品质的影响,试验采用盆钵培养的方法,在总氮浓度为15 mmol/L的条件下,设置了5 种NO3--N与NH4 -N配比(分别为100?0、75?25、50?50、25?75 和0?100),测定了5 种铵硝配比条件下菠菜生长与品质相关指标。结果表明:与NH4 -N相比,NO3--N更有利于菠菜生长与Vc积累。适当增加NH4 -N比例后,Vc 含量虽显著降低,但对菠菜的生长却无显著影响,并可显著降低可食用部分硝酸盐含量。因此,为了提供高产、低硝酸盐的优质菠菜,笔者认为适宜的NO3--N?NH4 -N为50?50。

关键词: 城镇化, 城镇化, 失地农民, 角色转换

Abstract: A pot experiment was adopted to investigate the effects of nitrogen forms on growth and edible quality of Spinacia oleracer L. The total nitrogen concentration in nutrient solution was 15 mmol/L and 5 different kinds of ratios of NO3--N and NH4 -N (100?0,75?25,50?50,25?75 and 0?100) were designed, and indexes of growth and quality were determined, respectively. The results showed that NO3--N was superior to NH4 -N on growth of Spinacia oleracer L and Vc accumulation. Vc concentration decreased significantly after the addition of NH4 -N, but it had little effect on growth of Spinacia oleracer L, and remarkably decreased nitrite content in edible parts. The reasonable ratio of NO3-- N and NH4 - N was 50?50 for the growth of Spinacia oleracer L with high yield and low nitrate content.

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