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以福建省部分地市采集的163个籼稻样品及对应的土壤样品为材料,研究了不同籼稻品种对土壤镍的富集能力,以期为镍污染土壤上籼稻品种的合理布局提供依据。结果表明,供试土壤全镍含量介于3.52~72.38 mg/kg,平均含量为17.86 mg/kg。供试土壤有效镍含量介于0.01~1.32 mg/kg,平均含量为0.30 mg/kg。供试糙米镍含量为0.04~1.82 mg/kg。镍在土壤和各品种糙米之间的转移系数均随土壤有效镍的升高呈幂函数降低。采用回归估算法、在土壤有效镍为0.1 mg/kg的点上估算了各水稻品种镍的代表性的转移系数(TF0.1,有效量基)。不同品种的TF0.1依次为:岳优9113>佳优948>深两优5814>培杂泰丰>天优998>宜香2292>宜优115>纳科1号>泉珍10号>Ⅱ优673>丰Ⅱ优1号>扬两优6号>宜优99>Ⅱ优3301>特优627>内2优6号。不同籼稻品种对土壤镍富集能力的差别主要为品种之间的差别,与常规稻或杂交稻、两系杂交或三系杂交无必然联系。
A total of 163 indica rice samples and their corresponding soil samples collected in some cities in Fujian Province were used as materials to study the enrichment ability of different indica rice varieties to soil nickel so as to provide evidences for the rational distribution of indica rice varieties in nickel - contaminated soils. The results showed that the contents of total nickel in the soil ranged from 3.52 to 72.38 mg / kg and the average content was 17.86 mg / kg. Available soil available nickel content ranged from 0.01 to 1.32 mg / kg with an average content of 0.30 mg / kg. The brown rice for testing nickel content of 0.04 ~ 1.82 mg / kg. The transfer coefficient of nickel between soils and all varieties of brown rice decreased with the increase of soil available nickel as a power function. Using regression estimation, the representative transfer coefficient (TF0.1, effective mass basis) for each rice variety was estimated at a soil available nickel concentration of 0.1 mg / kg. Different varieties of TF0.1 were as follows: Yueyou 9113> Jiayou 948> Shenliangyou 5814> Pei Taifeng> Tianyou 998> Yi Xiang 2292> Yiyou 115> Nake 1> Quanzhen 10> Ⅱ Excellent 673> Feng Ⅱ gifted 1> Yang two gifted 6> YIYOU 99> Ⅱ gifted 3301> gifted 627> 2 gifted 6. Differences in enrichment ability of different indica rice varieties for soil nickel are mainly the differences among cultivars, and are not necessarily related to conventional or hybrid rice, two-line or three-line hybridization.