摘要
[目的]研究稻田混栽水生植物对土壤和糙米镉含量的影响。[方法]以早稻和黑藻、水葱、菖蒲等3种水生植物为试验材料,研究了稻田混栽水生植物后对土壤和糙米镉含量的影响。[结果]混栽3种水生植物后,其土壤的全镉和有效镉含量与对照比较,均没有显著差异,但稻田混栽黑藻的土壤全镉含量显著高于混栽水葱和菖蒲;混栽黑藻和水葱后,糙米镉含量显著高于对照,混栽菖蒲的糙米镉含量与对照没有显著差异。[结论]该研究为探索稻田植物降镉技术的有效途径提供了参考。
[ Objective ] Effect of companion planting aquatic plants on cadmium content in paddy soil and rice was studied. [ Method] Taking early rice ,Hydrilla vertlcillata, Scirpus validus, Acorus calamus as experimental materials, effects of companion planting aquatic plants on cad- mium content in paddy soil and rice were studied. [ Result ] Compared with controls; the soil cadmium and effective cadmium content after mixing plant aquatic plants had no significant difference. The total cadmium content in soil mixed H. verticiUata was significantly higher than mixed S. validus and A. calamus. After mixing H. verticillata and S. validus, cadmium content in brown rice was significantly higher than that of control. [ Conclusion] It provides the reference for exploring an effective way to cadmium reduction technology in paddy.
出处
《安徽农业科学》
CAS
2015年第35期42-43,共2页
Journal of Anhui Agricultural Sciences
基金
湖南省环境保护厅水稻重金属污染项目(湘财建指[2013]229)
湖南生物机电职业技术学院科技创新团队项目(10TD14)
关键词
镉
糙米
混栽
水生植物
Cadmium
Brown flee
Companion planting
Aquatic plants
