In order to produce safe rice from cadmium (Cd) contaminated soils, a special pot experiment in the field was proposed to facilitate the study of multiple remediation measures. In the field experiments, four treatments were selected for the first half of the year: rice without soil treatment (R); rice with zeolite stabilization (RZ); oilseed rape phytoremediation (OR); and inter-cropping Sedum alfredii and maize phytoremediation (IC). As the early rice with zeolite stabilization still contained elevated Cd, manganese (Mn) fertilizer was added in the late rice with a special pot experiment in the field. Results showed that, in the first crops, the grains of maize and oilseed rape contained Cd below the food standard limit, while Cd in rice grain exceeded the limit of 0.2 mg/kg. The RZ treatment did not reduce Cd in rice but decreased significantly Mn in rice straw. In the late rice, Mn fertilizer additionally reduced Cd in rice grain to 0.12 mg/kg in combination with the RZ treatment. Mn accumulation in rice straw was enhanced by Mn fertilizer. These results indicate that the pot experiment in the field provides a useful tool to further evaluate effective treatment combinations to reduce Cd in rice.

为了从镉（Cd）污染的土壤中生产出安全的水稻，提出了一项特殊的田间盆栽试验，以促进多种修复措施的研究。在田间试验中，上半年选择了四个处理：水稻不土壤处理（R）；具有沸石稳定剂的大米（RZ）；油菜植物修复（OR）；和间作Sedum alfredii和玉米植物修复（IC）。由于沸石稳定的早稻仍含有较高的Cd，因此在晚稻中添加了锰（Mn）肥料，并在田间进行了特殊的盆栽试验。结果表明，第一季玉米和油菜籽粒中Cd含量低于食品标准限量，而水稻籽粒中Cd含量超过0.2mg/kg。RZ处理没有降低水稻中的Cd，但显着降低了稻草中的Mn。在晚稻中，锰肥与 RZ 处理相结合，还可将水稻籽粒中的 Cd 降低至 0.12 mg/kg。锰肥促进了稻草中锰的积累。这些结果表明，田间盆栽试验为进一步评估有效的处理组合以减少水稻中的镉提供了有用的工具。