CAJ | 학술논문

试验处理药剂为硫酸镉（3CdSO4·8H2O）和氯化镉（CdCl2·5/2H2O），镉处理浓度分别为0、0.5、1.0、2.0、5.0 mg/kg，采用土培盆栽方法研究12份水稻品种在分蘖盛期对镉的吸收特征差异。试验结果表明：根系含镉量受周围土壤镉含量影响较大，不能作为筛选低镉吸收水稻品种的鉴定指标；土壤中的镉含量只能作为筛选低镉吸收品种的间接指标，其镉残存量与处理浓度之间为二次回归关系，回归方程为y=-0.015x2+0.4001x+0.0874。植株体内镉含量，是最佳的可直接用于鉴定筛选低镉吸收品种的指标，处理浓度与植株体内含镉量呈极显著二次回归关系，回归方程为y=0.7431x2+0.3666x-0.0366。由间接和直接鉴定指标判定龙粳16、龙粳14、龙粳12及龙粳21为低镉吸收品种。
시험처리약제위류산력（3CdSO4·8H2O）화록화력（CdCl2·5/2H2O），력처리농도분별위0、0.5、1.0、2.0、5.0 mg/kg，채용토배분재방법연구12빈수도품충재분얼성기대력적흡수특정차이。시험결과표명：근계함력량수주위토양력함량영향교대，불능작위사선저력흡수수도품충적감정지표；토양중적력함량지능작위사선저력흡수품충적간접지표，기력잔존량여처리농도지간위이차회귀관계，회귀방정위y=-0.015x2+0.4001x+0.0874。식주체내력함량，시최가적가직접용우감정사선저력흡수품충적지표，처리농도여식주체내함력량정겁현저이차회귀관계，회귀방정위y=0.7431x2+0.3666x-0.0366。유간접화직접감정지표판정룡갱16、룡갱14、룡갱12급룡갱21위저력흡수품충。
In this experiment, the treatment medicament were cadmium sulfate (3CdSO4· 8H2O) and cadmium chloride (CdCl2· 5/2H2O), cadmium concentrations were 0, 0.5, 1, 2, 5 mg/kg, 12 rice varieties were used as material, the Cadmium absorption characteristics with potted soil experiment at tillering stage. The results showed that cadmium content of root was more affected by cadmium content of soil around, could not been used as a screening index for low cadmium absorption on rice variety. The cadmium content of soil been used as a screening indirect index for low cadmium absorption on rice variety, and there were two regression relationship between the residual quantity and concentration of cadmium, the regression equation was y=-0.015x2+0.4001x+0.0874. The cadmium content of plant was is directly used for screening low absorption of cadmium resistant index, there were significantly two regression between the treatment concentration and cadmium content, the regression equation was y=0.7431x2+0.3666x-0.0366. Longjing-16, Longjing-14, Longjing-12 and Longjing-21 were low cadmium absorption varieties by indirect and direct identification index.