Study on the accumulation characteristics of heavy metal cadmium in maize seedling stage under different soil conditions
Qinggui Wu
Tutong Dong Autonomous County Vocational and Technical School
Chen Guo
Tutong Dong Autonomous County Vocational and Technical School
DOI: https://doi.org/10.59429/pest.v7i1.9476
Keywords: Maize; Seedling stage; Enrichment coefficient; Transport coefficient; Cadmium
Abstract
: In order to study the differences in cadmium accumulation characteristics of maize seedlings under different soil cadmium conditions, field experiments were carried out with common maize varieties in the region as experimental materials and the accumulation and enrichment ability of maize cadmium as the research object. The results showed that the accumulation and enrichment ability of maize varieties to cadmium were different under the conditions of soil cadmium content of 0.86 mg/kg and 0.18 mg/kg. In Liuyang base, the Cd enrichment coefficient of seedling root of Xiangnongtianyu 3 was the largest, which was 1.64. The Cd enrichment coefficient of seedling root of Xianghuiyu 1 was the smallest, which was 0.59. The Cd enrichment coefficient of seedling leaf of Xiangnongyu 22 was the largest, which was 1.35. The Cd enrichment coefficient of seedling leaf of Xiangnongbainuo 2 was the smallest, which was 0.56. The root enrichment coefficient of Xiangnongtianyu 3 at seedling stage was the largest, which was 4.25, and that of Xiangnongbainuo 2 was the smallest, which was 2.36. The leaf Cd enrichment coefficient of Xiangnongyu 22 at seedling stage was the largest, which was 4.33, and that of Xiangnongyu 36 at seedling stage was the smallest, which was 1.75. These maize varieties were planted in the soil with 0.18 mg/kg cadmium content, but most of them showed strong enrichment ability. Therefore, field experiment and demonstration are necessary and important measures to promote the planting of maize varieties in areas with moderate and mild cadmium pollution.
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