不同水稻品种稻谷对土壤中镉富集特性初探

    Preliminary Study on the Enrichment Characteristics of Cadmium in Soil Among Different Rice Varieties

    • 摘要: 选取适宜福建漳州市栽培的甬优2640、隆晶优华占、隆晶优534、广8优粤禾丝苗、恒丰优粤合丝苗、荃优822、甬优12、甬优1540等8个水稻品种为材料,采用单因素田间试验,研究稻谷对土壤中镉(Cd)富集特性。结果表明:8种水稻品种对土壤中镉的富集特性有所差异,甬优2640、隆晶优华占、隆晶优534、广8优粤禾丝苗、恒丰优粤合丝苗、荃优822、甬优12、甬优1540稻谷中镉的含量分别为0.181、0.493、0.468、0.339、0.683、0.141、0.063和0.102 mg·kg-1;甬优2640、隆晶优华占,隆晶优534、广8优粤禾丝苗、恒丰优粤合丝苗、荃优822、甬优12、甬优1540稻谷对土壤中总镉和有效态镉的富集系数分别为125.5%和317.0%、342.1%和864.3%、325.0%和821.1%、235.4%和594.8%、473.8%和1197.1%、98.2%和248.0%、43.5%和109.9%、70.8%和179.0%。综上认为,甬优12可适宜在漳州市受镉轻度污染(土壤中镉总量<0.45 mg·kg-1)安全利用类的水田种植;而种植其他的7个水稻品种,稻谷镉含量是否超标还需进一步验证。

       

      Abstract: The eight rice varieties, including Yongyou 2640, Longjingyou huazan, Longjingyou 534, Guang 8 youyuehe silk seedling, Hengfeng youyuehe silk seedling, Quanyou 822, Yongyou 12 and Yongyou 1540, which were suitable for cultivation in Zhangzhou City of Fujian Province, were selected as the materials to study the enrichment characteristics for cadmium (Cd) in soil of rice through the single factor field experiment. The results showed that: the enrichment characteristics for cadmium in soil were different among the eight rice varieties. The content of Cd in Yongyou 2640, Longjingyou huazan, Longjingyou 534, Guang 8 youyuehe silk seedling, Hengfeng youyuehe silk seedling, Quanyou 822, Yongyou 12 and Yongyou 1540 were 0.181, 0.493, 0.468, 0.339, 0.683, 0.141, 0.063 and 0.102 mg·kg-1, respectively. The Enrichment coefficiens for the total Cd and available Cd in soil of Yongyou 2640, Longjingyou huazan, Longjingyou 534, Guang 8 youyuehe silk seedling, Hengfeng youyuehe silk seedling, Quanyou 822, Yongyou 12 and Yongyou 1540 were 125.5% and 317.0%, 342.1% and 864.3%, 325.0% and 821.1%, 235.4% and 594.8%, 473.8% and 1 197.1%, 98.2% and 248.0, 43.5% and 109.9%, 70.8% and 179.0%, respectively. In conclusion, Yongyou 12 was suitable to be planted in the paddy field of safe utilization which was slightly polluted by Cd (total Cd in soil<0.45 mg·kg-1) in Zhangzhou. However, for the other 7 rice varieties planted, whether the cadmium content in rice exceeded the standard still needed to be further verified.

       

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