Study on the Passivation Effect of Ca-Si Soil Conditioner on Heavy Metal Absorption by Rice  

作　　者：Yupeng ZHANG Xiaoxiao TAN Xiaoyuan CHEN Jiahui LIANG Chongjian MA Yongjun GUO Jianbing ZHOU 

机构地区：[1]Henry Fok College of Biology and Agriculture,Shaoguan University,Shaoguan 512005,China [2]Soil and Land Engineering Technology Research Center of North Guangdong,Shaoguan 512005,China [3]Foshan Zhibao Ecological Technology Co.Ltd.,Foshan 528000,China

出　　处：《Agricultural Biotechnology》2020年第3期104-106,112,共4页农业生物技术（英文版）

基　　金：Supported by Natural Science Foundation of Guangdong Province(2018A030307075);Special Fund for Science and Technology Innovation Strategy of Guangdong Province(135-99000206,432-99000228);Science and Technology Planning Project of Shaoguan City(2018sn038);School-level Project of Shaoguan University(SY2016KJ04);Undergraduate Innovation and Entrepreneurship Project(Sycxcy2017-041,201810576009)。

摘　　要：[Objectives] In order to solve the problem of heavy metal pollution in paddy fields,field experiments were carried out to study the effect of Ca-Si soil conditioner on heavy metal remediation in paddy fields. [Methods] A conventional planting mode( CK) was used as the control,and a Ca-Si soil conditioner( Ca-Si) treatment was set to analyze the differences in soil pH and heavy metal contents in different treatments. [Results]The content of cadmium in the paddy field exceeded the soil pollution risk control value of agricultural land by 59. 33%. The Ca-Si soil conditioner increased the pH value of paddy field soil by 0. 58 unit. The fixation rates of Ca-Si soil conditioner on chromium,arsenic,cadmium and plumbum reached 75. 96%,14. 09%,18. 93% and 7. 81% compared with the CK,respectively,and the available cadmium and lead contents were reduced by 82. 35% and 80. 00%,respectively. [Conclusions]This study provides ideas and references for the remediation of heavy metal pollution in paddy soil.

关 键 词：CONDITIONER Late rice Soil pollution PASSIVATION 

分 类 号：X173[环境科学与工程—环境科学] X53