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田间条件下Pb在土壤-水稻中的迁移特征?/Transfer characteristics of Pb in soil-rice system under field conditions[J]
Authors
GAN Guojuan
HOU Hongbo
+14 more
LIAO Bohan
LIU Yan
PENG Peiqin
ZHANG Ping
ZHU Xiaolong
中南林业科技大学环境科学与工程研究中心,长沙,410004
中国科学院新疆生态与地理研究所,新疆,830011
侯红波
刘妍
廖柏寒
张平
彭佩钦
朱晓龙
甘国娟
Publication date
1 January 2015
Publisher
Abstract
以湘中某工矿区农田为研究对象,野外定点采集红壤和紫色土母质水稻土耕层土壤及其对应样点水稻分蘖期和成熟期样品,分别使用富集系数、迁移系数和累积系数研究了Pb在土壤?水稻系统中的迁移特征.结果表明,成熟期水稻各部位 Pb含量为根>茎叶>稻壳>糙米,其富集系数分别为55.07%、8.13%、2.47%、0?10%;迁移系数分蘖期为0.034%,成熟期0.080%,成熟期高于分蘖期(P<0.01),成熟期迁移系数紫色土高于红壤(P<0.01);糙米累积系数红壤为0.40%,紫色土0.27%,红壤大于紫色土(P<0.05).综上所述,Pb在红壤和紫色土母质以及水稻分蘖期和成熟期的迁移特征均表现出一定的差异,所以在进行稻田Pb环境管理时需要注意土壤母质和水稻生长时期特点
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Last time updated on 29/11/2016