CAJ | 학술논문

通过土培试验研究了10个来自不同产地的玉米（ Zea mays）品种对重金属铅和镉的累积特性。结果表明，重金属铅（400 mg·kg－1）和镉（10 mg·kg－1）复合胁迫条件下，玉米不同生育期累积铅的能力从大到小依次为成熟期、拔节期和苗期，累积镉的能力从大到小依次为苗期、拔节期和成熟期。玉米各部位铅镉吸收量从大到小依次为根、茎、叶和籽粒。供试的10个玉米品种中籽粒铅含量均超过GB 2715—2005《粮食卫生标准》中的规定（≤0?2 mg·kg－1），广甜3号、国审浚79－5、兴黄单892、晋单51和北科4号籽粒镉含量符合GB 2715—2005中的卫生标准（≤0?1 mg·kg－1）。其中，广甜3号对镉的累积量最小，可以在中、轻度污染土壤上推广种植。
통과토배시험연구료10개래자불동산지적옥미（ Zea mays）품충대중금속연화력적루적특성。결과표명，중금속연（400 mg·kg－1）화력（10 mg·kg－1）복합협박조건하，옥미불동생육기루적연적능력종대도소의차위성숙기、발절기화묘기，루적력적능력종대도소의차위묘기、발절기화성숙기。옥미각부위연력흡수량종대도소의차위근、경、협화자립。공시적10개옥미품충중자립연함량균초과GB 2715—2005《양식위생표준》중적규정（≤0?2 mg·kg－1），엄첨3호、국심준79－5、흥황단892、진단51화북과4호자립력함량부합GB 2715—2005중적위생표준（≤0?1 mg·kg－1）。기중，엄첨3호대력적루적량최소，가이재중、경도오염토양상추엄충식。
Based on a pot experiment using 10 cultivars of maize from 10 different production areas, characteristics of the maize adsorbing and accumulating heavy metals, like Pb and Cd were studied. Results show that under combined Pb (400 mg·kg-1)and Cd (10 mg·kg-1) stress, the accumulation of Pb in maize varied with the growth stage, displaying de?creasing order of ripening stage>jointing stage>seedling stage, while the Cd accumulation in maize did, too, but displaying a different order, i.e. seedling stage>jointing stage>ripening stage. In addition, the distribution of Pb and Cd in the plant also varied, showing an order as root>stem>leaf>grain, which means that root was the main part where the heavy metals were accumulated. Obviously, the 10 cultivars of maize all exceeded the criteria for Pb (≤0?2 mg·kg-1 ) in grains speci?fied in the National Sanitation Standard of China ( NSSC) in content of Pb, while Cultivars Guangtian 3, Guoshenjun 79-5, Xinghuangdan 892, Jindan 51, and Beike 4 were under the criteria for Cd (≤0?1 mg·kg-1 ) in grain specified in the NSSC. The lowest accumulation of Cd was found in Guangtian 3, which suggested that this maize cultivar can be extraplot?ed to areas slight or medium in soil pollution.