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| 1 | 天津本地品种水稻镉累积特性差异研究显示文摘目的选取天津市水稻品种武津粳1号、香糯ZP-3及皖香早-1为研究对象,研究水稻镉累积特性差异,以及与天津本地种植环境的相关性。方法分别对盆栽水稻土壤进行不同浓度梯度的镉污染处理,然后种植3个品种的水稻,最终采收测定。结果各品种水稻的茎叶、稻壳及糙米中镉含量均随土壤镉污染程度增加而呈上升趋势,且各部位镉累积量都符合茎叶>稻壳>糙米的规律。富集系数表明,在低浓度污染条件下(<5.0mg/kg),3个品种镉累积含量虽有一定差异,但差异不明显;在高浓度污染条件下(≥5.0mg/kg),香糯ZP-3的富集系数明显低于其他2个品种。通过软件对实验数据进行分析,建立了3个水稻品种糙米镉含量预测模型。结论通过阈值的比较,可以看出不同品种水稻对镉吸收累积特性及镉污染的耐受性存在较大差异。 | 殷萍 陈秋生 张强 刘烨潼 杨喆 艾丹 | 2018 | 食品安全质量检测学报2018，9，21： | 5 |
| 2 | 天津市主要栽种水稻品种对镉的累积差异研究显示文摘目的研究天津本地主栽品种水稻对镉的累积特性差异。方法选取天津市水稻品种津原47,津原11及津原E28在不同镉添加浓度的盆栽土壤中进行种植,待成熟后采收地上部分并测定镉含量。结果各品种籽粒重量及生物量随镉添加浓度升高而降低。水稻的茎叶、稻壳及糙米镉含量则随镉添加浓度升高而升高,且符合茎叶>稻壳>糙米的规律。各部位富集系数:津原47为1.56~6.99,津原11为1.20~7.37,津原E28为1.11~13.0。根据实验数据建立了3个水稻品种糙米镉含量预测模型,并计算出安全临界值,分别是12.20、11.01及12.65 mg/kg。结论通过比较产量及富集系数表明品种间及水稻各部位对镉的累积特性存在差异。当土壤中的污染浓度超过该临界值时,糙米中镉含量有可能超出安全限量标准,存在风险。 | 殷萍 陈秋生 张强 刘烨潼 张玺 | 2020 | 食品安全质量检测学报2020，11，8： | 2 |
| 3 | Influence of Percolation Patterns and Soil Copper Concentration on Copper Uptake,and Growth and Yield with Copper-Polluted Stratified Paddy Fields显示文摘Copper(Cu)was designated as a specific substance in the Agricultural Land Soil Pollution Prevention Act in Japan.It has been known that high Cu concentrations in soil layers reduce rice crop production and thus agricultural practices such as soil dressing have been applied to minimize the damages to crops by copper pollution.In this study,authors investigated the effects of percolation patterns of the under-plowsole and subsoil on growth and yield,and copper uptake of paddy rice.Six stratified paddy field models were constructed to conduct the growth tests under the condition in which the percolation patterns of the under-plowsole and subsoil were in an open and closed system.These models have a plow layer(10 cm thickness)and upper-plowsole(2.5 cm thickness)made with 12.5 cm-thickness of non-polluted soil dressing(3.7 mgCu?kg-1)and an underlying 15 cm-thickness of polluted under-plowsole(7.5 cm thickness)and subsoil whose Cu concentration was higher or lower than Japanese safety standard(approximately 100 mgCu?kg-1,150 mgCu?kg-1 and 500 mgCu?kg-1,respectively).During the tests,a constant water-ponding system was adopted,and mid-summer drainage was not done.As a result,Cu concentrations of the rice grains were 5%significantly higher in the open system percolation models regardless of the original amount of Cu in the under-plowsole and subsoil.On the other hand,authors did not recognize any significant differences in growth and yield of rice plants among the models.Authors concluded that the Cu concentrations in rice plants are affected by percolation patterns of polluted plowsole and subsoil even though they are covered with non-polluted soil dressing layers. | Jinhun Fan Choichi Sasaki Chihiro Kato Nobuhiko Matsuyama Takeyuki Annaka Akira Endo Songtao Li | 2018 | Journal of Environmental Science and Engineering(A)2018，7，4： | 0 |
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