不同铵硝比对菠菜生长、安全和营养品质的影响
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

*安徽省自然科学基金项目(050410105);国家自然科学基金项目(30270790)资助


EFFECTS OF NH4+-N/NO3--N RATIO ON GROWTH,FOOD SAFETY AND NUTRITIONAL QUALITY OF SPINACH (SPINACIA OLERACEA L.)
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    通过水培试验,研究了等氮条件下5种不同铵硝比对菠菜生长和品质的影响.结果表明:(1)从铵硝比100:0到0:100,菠菜地上部鲜重不断增加,铵硝比为0:100时,菠菜的鲜重达最大值;但铵硝比25:75和0:100两个处理菠菜的干物重没有显著差异(p<0.05).(2)随着铵硝比的降低,菠菜茎叶中硝酸盐、亚硝酸盐的含量均表现为线性增加;菠菜茎叶中可溶性草酸的含量和营养液中铵硝比之间呈现出二次曲线相关,在铵硝比为25:75时,菠菜茎叶中草酸含量最低.适当增施铵态氮有利于降低菠菜硝酸盐、亚硝酸盐及草酸的含量.(3)增铵可以提高菠菜Vc含量,铵硝比为50:50的处理菠菜Vc含量最高;随着铵硝比的下降,菠菜茎叶中可溶性糖的含量逐渐降低,而粗蛋白的含量则以铵硝比25:75处理最高.

    Abstract:

    A solution culture experiment was conducted to study effects of NH4+-N/NO3--N ratio on growth,food-safety and nutrition of spinach.The following results were obtained. (1) Fresh weight of spinach shoots gradually increased with the percentage of NO3--N in the total nitrogen,and spinach supplied with NO3--N as its sole nitrogen source was the highest in biomass,but there was no significant difference (p<0.05) in dry matter weight between treatments,25:75 and 0:100 in NH4+-N/NO3--N ratio. (2) Contents of nitrate and nitrite in spinach shoots increased linearly with the decrease in NH4+-N/NO3--N ratio.A significant quadric relationship was observed between the percentage of NO3--N in the total nitrogen and soluble oxalate content of the spinach shoots,and in Treatment 25:75 in NH4+-N/NO3--N ratio,the soluble oxalate content was the lowest.Obviously,proper partial replacement of NO3--N by NH4+-N is beneficial to decreasing contents of nitrate,nitrite and oxalate in spinach. (3) Proper partial replacement of NO3--N by NH4+-N increased Vc content in spinach shoots,and it was the highest in Treatment 50:50 in NH4+-N/NO3--N ratio.Content of soluble sugar in spinach shoots gradually decreased with the NH4+-N/NO3--N ratio,and content of crude protein was the highest in Treatment 25:75 in NH4+-N/NO3--N ratio.

    参考文献
    相似文献
    引证文献
引用本文

汪建飞,董彩霞,沈其荣.不同铵硝比对菠菜生长、安全和营养品质的影响[J].土壤学报,2007,44(4):683-688. DOI:10.11766/trxb200604240415 Wang Jianfei, Dong Caixia, Shen Qirong. EFFECTS OF NH4+-N/NO3--N RATIO ON GROWTH, FOOD SAFETY AND NUTRITIONAL QUALITY OF SPINACH (SPINACIA OLERACEA L.)[J]. Acta Pedologica Sinica,2007,44(4):683-688.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2006-04-24
  • 最后修改日期:2006-09-17
  • 录用日期:
  • 在线发布日期: 2013-02-25
  • 出版日期: