Effects of Flooding Irrigation Combined with Foliar Inhibitors on the Absorption and Accumulation of Cadmium in Rice

在益阳市赫山区某镉(Cd)污染稻田进行田间试验，探讨淹水灌溉联合叶面阻控剂的组合措施对土壤Cd有效态含量、pH值以及水稻植株各器官(根、茎、叶、谷壳和糙米) Cd吸收转运的影响。结果表明：淹水灌溉联合叶面阻控剂的组合措施可以有效降低土壤中Cd的有效性，减少水稻对Cd的吸收。在淹水灌溉和叶面阻控剂的联合处理下，土壤中的pH值与对照相比显著(P P P A field experiment was conducted in a cadmium (Cd)-contaminated paddy field in Heshan District, Yiyang City, to investigate the effects of flooding irrigation combined with foliar inhibitors on the availability of Cd in soil, soil pH and Cd uptake and translocation in various rice plant organs (roots, stems, leaves, husks and brown rice). The results indicated that: the remediation technology integrating flooding irrigation combined with foliar inhibitors effectively reduce the bioavailability of Cd in soil and decrease Cd uptake by rice plants. Under this combined treatment, soil pH increased significantly (P P P P < 0.05) by 25.7%, 39.5% and 58.4%, respectively. Therefore, the technical measures of flooding irrigation combined with foliar inhibitors can effectively reduce the absorption and translocation of Cd by rice without affecting rice yield, and significantly reduce the absorption of Cd by brown rice.