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以水稻土为供试土壤,进行室外盆栽试验,采用二元二次正交回归组合设计方法,研究了钢渣对Cd污染水稻土中水稻茎叶和糙米中Cd含量的影响。研究结果表明:土壤受Cd污染越严重,水稻茎叶和糙米中Cd含量越大;施入钢渣可以降低水稻茎叶和糙米中Cd含量;施入钢渣的量越大,水稻茎叶和糙米中Cd含量降低的幅度也越大。
Paddy soil was used as tested soil for outdoor pot experiment. The effects of steel slag on Cd content in rice stems, leaves and brown rice in Cd-contaminated paddy soil were studied by binary quadratic regression combined design method. The results showed that the soil Cd pollution was more serious, the greater the Cd content in stems and leaves of rice and brown rice; the application of steel slag can reduce the Cd content of rice stems and leaves and brown rice; the greater the amount of steel slag, The lower the content of Cd, the greater the magnitude.