期刊论文

Correlations Between Different Extractable Cadmium Levels in Typical Soils and Cadmium Accumulation in Rice

Peng, Pei-Qin(pqpeng123@sina.com)

中文

环境科学

0250-3301

2017

38

6

2538-2545

10.13227/j.hjkx.201610158

(2015BAD05B02):国家科技支撑计划项目 (农办财函[2015]38号):农业部财政部重大专项 (2006180):湖南省重点学科建设项目

本校为第一机构

用盆栽试验方法研究典型土壤不同提取态Cd(TCLP-Cd和土壤溶液-Cd)及其与水稻吸收累积的关系.选取典型水稻土红黄泥(第四纪红色黏土母质发育)和紫泥田(紫色砂页岩母质发育的紫泥田),添加外源Cd梯度为0、0.5、1、2、5、10 mg·kg~(-1),进行水稻盆栽试验,研究水稻不同生育期土壤pH、土壤溶液Cd(SSE-Cd)、TCLP提取态Cd(TCLP-Cd)及水稻各部位Cd积累量变化.结果表明,水稻生育期红黄泥SSE-Cd范围为0~2.50 μg·L~(-1)平均0.57 μg·L~(-1),而紫泥田浓度范围为0 ~ 1.60 μg·L~(-1),平均0.48 μg.L~(-1);红黄泥TCLP-Cd范围为0 ~ 0.25 mg·kg~(-1),平均0.10 mg·kg~(-1),而紫泥田为0 ~ 0.2 mg·kg~(-1)平...

Pot experiments were used to study the correlations between different extractable cadmium levels in typical soil and cadmium accumulation in rice. To analyze the pH, Cd in soil solution(SSE-Cd), TCLP extractable Cd level(TCLP-Cd), and Cd accumulation in rice at different growth stages of rice, we conducted pot experiments which selected the reddish clayey soil(developed from quaternary red clay parent materials) and purple paddy field(developed from purple sandy shale parent materials), meanwhile added with exogenous Cd with the gradients of 0,...