镉污染稻田甘薯种植专用土壤调理剂的应用研究

生态农业修复是最直接有效的镉污染农田污染治理的方法。该方法在筛选镉低积累农作物品种的同时,还需配套合理的土壤处理措施和栽培方法,以更有效的实现镉污染大田的利用和生态修复。试验在筛选出镉低积累甘薯品种"浙紫3号"的基础上,分析了不同土壤调理剂、对甘薯生长、大田土壤和甘薯镉积累的影响。实验结果发现腐植酸不仅能促使"浙紫3号"增产,还能有效抑制甘薯对土壤镉的吸收和积累,同时可以有效改良土壤结构,降低土壤单位重量的镉含量,可做为镉污染大田土壤调理剂的最优选择。

Application Research of Sweet Potato Cultivation Special Soil Conditioner in Cadmium Polluted Field

The most direct and effective method for the treatment of cadmium(Cd) pollution in soil is the agricultural ecological restoration, which need to screen crop varieties with the low Cd accumulation and find reasonable measures of soil treatment and corresponding cultivation techniques, in order to achieve more efifcient use and ecological restoration of the Cd polluted farmland. This trial had screened sweet potato varieties “Zhezi No.3” with low Cd accumulation. In the meanwhile, the effects of different soil conditioner on the growth of sweet potato, the Cd contamation of soil and sweet potato were studied. This trial had found that humic acid was the optimal Cd contaminated ifeld soil conditioner. It can promoted “Zhezi No.3” production, inhibit the Cd absorption and accumulation in sweet potato on the soil, improve soil structure effectively, reduce soil Cd content per unit weight, optimal choice Cd contaminated ifeld soil conditioning agent.