https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2005, Vol. 32 ›› Issue (4): 716-718.

• 研究报告 • 上一篇    下一篇

双氰胺对无土栽培菜薹硝酸盐积累的影响

黄星发;顾明华;黎晓峰;唐新莲;龙明华   

  1. (广西大学农学院, 南宁530005)
  • 收稿日期:2004-09-23 修回日期:2005-01-28 出版日期:2005-08-25 发布日期:2005-08-25

A Study of Dicyandiam ide Effect on the Accumulation of Nitrate in Soilless cultured Brassica campestris

Huang Xingfa;Gu Minghua;Li Xiaofeng;Tang Xinlian;Long Minghua
  

  1. (College of Agriculture, Guangxi University, Nanning 530005, China)
  • Received:2004-09-23 Revised:2005-01-28 Online:2005-08-25 Published:2005-08-25

摘要: 研究了双氰胺对甘蔗渣基质培菜薹硝酸盐积累的影响。结果显示, 采收前20 d施用双氰胺的处理, 其基质中的NO 3--N含量比不施双氰胺处理的低, 而NH4+-N含量较高; 双氰胺显著降低菜心硝酸盐含量, 而对产量无明显影响。

关键词: 菜薹, 双氰胺, 硝酸盐, 积累, 硝态氮

Abstract: The effect of dicyandiamide (DCD) on the accumulation of nitrate in Brassica campestris L. ssp. chinensis var. utilis Tsen. et Lee. was investigated in the present study. The results indicated that DCD, which was applied at 20 d before harvest of the vegetable, had a significant effect on lowering the
amount of NO 3--N and enhancing the level of NH4+-N in the substrate. Consequently, DCD supp ressed excessive accumulation of nitrate in the vegetable, while yield of the vegetable was not affected by the app lication of
DCD, suggesting that the decrease of nitrate accumulation in vegetable treated with DCD was resulted from the inhibition of nitrification and the reduction of nitrate absorption.

Key words: Brassica campestris, Dicyandiamide, Nitrate, Accumulation, Nitrate nitrogen

中图分类号: