摘要
为探究轻度汞污染耕地的优选安全利用模式,选取嘉兴市南湖区轻度汞污染的稻–麦轮作耕地,设计了连续4年的汞低积累水稻品种筛选与钝化剂比选的随机区组试验,以及连续2年的8个不同安全利用模式的试验,收获期对糙米汞含量进行检测。经过4年的轻度汞污染耕地大田试验,初步筛选出7个汞低积累水稻品种:甬优538、嘉禾香1号、秀水14、南粳46、宁84、嘉58和甬优1140。试验结果表明,对于轻度汞污染耕地,不适宜施用生石灰、有机肥、无机硫等钝化剂,而更适合选择汞低积累水稻品种与深翻耕相结合的方式作为安全利用模式,对该研究区域来说安全且经济有效。
To explore the optimal safe utilization model for mildly Hg-contaminated farmland,this study selected rice–wheat rotation farmland with mild Hg pollution in Nanhu District,Jiaxing City.A four-year randomized block experiment was designed to screen low Hg accumulating rice varieties and compare passivators,as well as a two-year experiment was conducted to evaluate eight different safe utilization models.Hg content in brown rice was measured at the harvest stage of rice.After four years of mild Hg contamination field experiments,seven rice varieties with low Hg accumulation were preliminarily screened:Yongyou 538,Jiahexiang 1,Xiushui 14,Nanjing 46,Ning 84,Jia 58,and Yongyou 1140.The experimental results indicated that for mildly Hg-contaminated farmland,it is not suitable to apply passivators such as quicklime,organic fertilizers,and inorganic sulfur.It is more suitable to choose a combination of low Hg accumulation rice varieties and deep tillage as a safe utilization mode,which is safe and economically effective for the research area.
作者
孙达
石艳平
张敏
王孟兰
苏舜
董金龙
陈贵
林健
董珊珊
段增强
张凌霄
SUN Da;SHI Yanping;ZHANG Min;WANG Menglan;SU Shun;DONG Jinlong;CHEN Gui;LIN Jian;DONG Shanshan;DUAN Zengqiang;ZHANG Lingxiao(Technology Extension Station of Agriculture and Fisheries of Nanhu District of Jiaxing,Jiaxing,Zhejiang 314051,China;Jiaxing Soil,Fertilizer,Plant Protection and Rural Energy Station,Jiaxing,Zhejiang 314050,China;Bureau of Agriculture and Rural Affairs of Jiangning District,Nanjing 210019,China;Institute of Soil Science,Chinese Academy of Sciences,Nanjing 211135,China;Jiaxing Academy of Agricultural Sciences,Jiaxing,Zhejiang 314016,China;Zhejiang Dongtianhong Environmental Protection Engineering Co.,Ltd.,Hangzhou 310000,China;Jiutian Environmental Technology Nanjing Co.,Ltd.,Nanjing 211100,China;Graduate School of the Chinese Academy of Sciences,Beijing 101408,China)
出处
《土壤》
北大核心
2025年第5期1107-1114,共8页
Soils
基金
浙农计发[2022]10号项目
嘉兴市科技计划项目(2021AZ10009)资助。
关键词
轻度汞污染
品种筛选
钝化剂
安全利用
Mild Hg contamination
Variety screening
Passivator
Safe utilization
