在不同土壤镉含量水平的水稻田，进行了不同栽培方式下不同品种稻米镉吸附规律的研究。结果表明，3个试验点土壤镉含量分别为0.188 mg/kg、0.749 mg/kg、1.420 mg/kg，pH值分别为6.41、5.80、7.29；3个试验点移栽方式下稻米镉含量平均分别为0.093 mg/kg、0.944 mg/kg、2.494 mg/kg，直播方式下稻米镉含量平均分别为0.071 mg/kg、0.434 mg/kg、0.243 mg/kg。可见，土壤镉含量对稻米镉含量具有决定性作用，而土壤pH值对稻米镉吸附又有显著影响；不同栽培方式稻米中镉含量差异巨大，与育苗移栽相比，直播有显著降低稻米镉含量的作用；不同早熟品种对土壤中镉的吸收也有显著差异。因此，在镉污染区，进行直播栽培、适当改良和调节土壤酸碱度、选育低镉吸附品种，是降低镉污染、保证粮食安全的简单易行而又切实可靠的重要手段。

The cadmium accumulate rule in grain of different rice varieties under different cultivation methods were studied. The results showed that, the soil cadmium content of the three test points were 0.188 mg/kg, 0.749 mg/kg, 1.420 mg/kg, and the pH values were 6.41, 5.80, and 7.29, respectively; the average cadmium content in grain under the transplanting mode of the three experimental sites were 0.093 mg/kg, 0.944 mg/kg, and 2.494 mg/kg, respectively, and the average cadmium content in grain under the direct seeding mode was 0.071 mg/kg, 0.434 mg/kg, and 0.243 mg/kg, respectively. It can be seen that the soil cadmium content has a decisive effect on the cadmium content of rice, and the soil pH value has a significant impact on the cadmium adsorption of rice; different early-maturing varieties also have significant differences in the absorption of cadmium in the soil . Therefore, in cadmium-contaminated areas, direct seeding cultivation, proper improvement and adjustment of soil pH, and selection of low-cadmium adsorption varieties are simple, practical and reliable important means to reduce cadmium pollution and ensure food safety.