期刊论文

中文

作物研究

1001-5280

2022

36

2

126-131

10.16848/j.cnki.issn.1001-5280.2022.02.06

湖南省自然科学基金青年项目（2020JJ5251）；

本校为第一机构

为探索适合镉（Cd）污染农田的种植模式，在浏阳市蕉溪镇某中度污染农田（pH为5.73,Cd总含量为0.86 mg/kg）开展大田试验，分析亚麻—水稻水旱轮作模式对Cd的累积能力和对农田土壤Cd污染的修复效率。结果表明，亚麻对Cd具有较强的富集能力，其叶片Cd含量最高，为7.77 mg/kg,富集系数（BCF）达9.83;果壳与籽粒的镉含量均在3.00 mg/kg以上，对应的BCF值分别为4.18和3.86。一季亚麻的总生物量为16 950.50 kg/hm~2,可提取Cd 74.28 g/hm~2,修复效率为3.84%。与前茬未种亚麻的对照相比，轮作模式下水稻各部位尤其是糙米对Cd的累积呈现明显下降的趋势。后茬水稻收获后，稻草离田，亚麻—水稻轮作模式每...

In order to explore a suitable planting mode for cadmium(Cd)polluted farmland, a field experiment was carried out in a moderately polluted farmland(pH 5.73,total content of Cd was 0.86 mg/kg)in Jiaoxi Town, Liuyang City, Changsha City, to analyze the Cd accumulation capacity and Cd remediation efficiency of flax-rice rotation mode. The results showed that flax had a strong enrichment ability for Cd, with the highest content of Cd in leaves(7.77 mg/kg)and enrichment coefficient of 9.83.The cadmium content of fruits(including shells and seeds)was above 3.00 mg/kg, and the corresponding BCF value...