CAJ | 학술논문

[目的]为了研究土壤镉污染对马铃薯氮、磷、钾、镉含量与积累量的影响。[方法]采用盆栽方式，以费乌瑞它马铃薯为试验材料，测定采收后的马铃薯产量、氮磷钾镉含量及积累量。[结果]轻度的镉胁迫降低了马铃薯块茎氮含量，而中度和重度镉胁迫下马铃薯块茎氮含量增加，镉污染各处理氮积累量均显著低于对照处理；随着土壤镉浓度的增加，磷含量在0.01水平显著增加，而磷积累量变化不大；土壤不同镉处理马铃薯钾含量均在0.01水平显著高于对照处理，土壤轻度镉处理马铃薯钾积累量最高，随着镉污染程度的加大，钾积累量降低；土壤不同浓度镉处理下马铃薯块茎镉含量与积累量均呈直线0.01水平显著正相关。[结论]土壤镉污染马铃薯氮肥施用量降低，磷肥施用量不变，轻度镉污染增加钾肥施用量，土壤镉重度污染不适合种植马铃薯。
[목적]위료연구토양력오염대마령서담、린、갑、력함량여적루량적영향。[방법]채용분재방식，이비오서타마령서위시험재료，측정채수후적마령서산량、담린갑력함량급적루량。[결과]경도적력협박강저료마령서괴경담함량，이중도화중도력협박하마령서괴경담함량증가，력오염각처리담적루량균현저저우대조처리；수착토양력농도적증가，린함량재0.01수평현저증가，이린적루량변화불대；토양불동력처리마령서갑함량균재0.01수평현저고우대조처리，토양경도력처리마령서갑적루량최고，수착력오염정도적가대，갑적루량강저；토양불동농도력처리하마령서괴경력함량여적루량균정직선0.01수평현저정상관。[결론]토양력오염마령서담비시용량강저，린비시용량불변，경도력오염증가갑비시용량，토양력중도오염불괄합충식마령서。
[Objective] This study aimed to investigate the effects of cadmium contami-nation in soil on contents and accumulation amounts of nitrogen, phosphorus, potas-sium and cadmium elements in potato tubers. [Method] Pot experiment was con-ducted using potato variety ‘Favorita’ as experimental material, to determine the contents and accumulation amounts of nitrogen, phosphorus, potassium and cadmi-um elements in potato tubers after treatment with different concentrations of cadmi-um. [Result] The results showed that different concentrations of cadmium had vari-ous effects on the contents and accumulation amounts of nitrogen, phosphorus, potassium and cadmium elements in potato tubers. Nitrogen content in potato tubers was reduced under low cadmium stress and increased under moderate and high cadmium stress. Nitrogen accumulation amount in potato tubers in various cadmium treatments was significantly lower than that in control group (P<0.05); with the in-crease of cadmium concentration in soil, phosphorus content increased extremely significantly (P>0.05); potassium content in potato tubers in various cadmium treat-ments was extremely significantly higher than that in control group (P<0.01). Potas-sium accumulation amount in potato tubers under low cadmium stress reached the highest, which was reduced with the increasing level of cadmium contamination; both content and accumulation amount of cadmium in potato tubers had extremely signifi-cantly positive linear correlation with different cadmium concentrations in soil (P<0.01). [Conclusion] Under cadmium-contaminated conditions, the application level of nitrogen fertilizer is reduced, and the application level of phosphorus fertilizer main-tains unchanged. Under low cadmium-contaminated conditions, the application level of potassium fertilizer increases. Severely cadmium-contaminated soil is not suitable for potato cultivation.