摘要
采用盆栽实验方法,研究了芥菜Brassicajuncea(var.multiceps)在土培情况下对稀土吸收的剂量效应关系以及改善营养条件和添加有机配体对其吸收能力的影响。结果表明,稀土在植物中的累积与NH4NO3提取态稀土有着明显的相关性;添加有机配体、S和N可以提高稀土的生物可利用性,其中添加有机配体最为明显;P无明显促进作用。
The dose effect of REEs on its accumulation in Brassica juncea and the influences of improving nutrient conditions and adding organic chelators on the uptake of REEs were investigated. There existed a significant correlation between the REEs in plant and the NH4NO3 - extracted REEs in soil. The addition of organic chelators, nitrogen and sulphur could increase the bioavailability of REEs in soil, with organic chelators most obvious, but no obvious promoting effect of phosphor was observed.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2004年第3期455-458,共4页
Journal of Agro-Environment Science
基金
国家自然科学基金资助(29890280-1)
国家重点实验室资助项目
关键词
芥菜
稀土
有机配体
N
S
P
brassica juncea
REEs
organic chelators
nitrogen
sulphur
phosphor
