铅磷对栀子花幼苗生长的影响及磷积累特性研究  

Effcets of Pb,P stress on growth and P accumulation characteristics of Gardenia jasminoides

作　　者：王飞[1] 黄应平[1] 郭强[1] 聂小倩[1] 梅朋森 胥焘[1] 

机构地区：[1]三峡库区生态环境教育部工程研究中心/三峡大学,湖北宜昌443002 [2]宜昌市林业局,湖北宜昌443002

出　　处：《广东农业科学》2013年第2期50-53,共4页Guangdong Agricultural Sciences

基　　金：国家"十二五"水专项(2012ZX07104-002-04);湖北省高等学校优秀中青年科技创新团队计划项目(T200703)

摘　　要：以栀子花幼苗为研究对象,在不同浓度Pb、P处理下进行土壤盆栽试验,分析栀子花幼苗根、茎、叶中生物量的变化及其P含量的不同,探讨Pb、P胁迫下栀子花对P的吸收积累特性。结果表明,在该试验条件下,重金属Pb对栀子花幼苗的生长表现出"抑制"现象,P对栀子花幼苗的生长表现出"低促高抑"现象;低浓度(≤651.64 mg/kg)P污染下,施Pb不影响栀子花幼苗对P的吸收,高浓度(≥1 251.64 mg/kg)P污染下,施Pb降低了栀子花幼苗对P的吸收能力,并且对根、茎的影响大于叶;栀子花幼苗体内的P主要储存在根中,茎和叶中储存的相对较少。The effects of Pb and P compound stress on the biomass and P concentration of Gardenia jasminoides was analyzed in detail in this paper. The results showed that the growth was inhibited significantly under Pb stress, but the growth was promoted under low P stress and was inhibited under high P stress. Pb have no effect on P uptake and accumulation characteristics of Gardenia jasminoides under the low P （≤651.64 mg/kg） stress, however Pb reduce the P uptake of Gardeniajasminoides under the high P （1 251.64 mg/kg） stress. The effect on the root and stem was greater than the leaf. Most of the P was stored in the root of Gardenia jasminoides.

关 键 词：PB P 栀子花 吸收 

分 类 号：S685.99[农业科学—观赏园艺]