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首页> 外文期刊>Journal of Bionanoscience >Reduction of Heavy Metal Cadmium Accumulation in Rice Grains
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Reduction of Heavy Metal Cadmium Accumulation in Rice Grains

机译：减少水稻籽粒中重金属镉的积累

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摘要

Pot experiments were conducted in the present study to investigate effects of different cadmium (Cd) concentrations in contaminated rice yields, correlation of Cd content in rice grains from soils contaminated with different concentrations of Cd, and influences of maifanite and foliar application of silica sols on alleviation of Cd toxicity in the contaminated rice soil. Results from the study showed that the relationship between the Cd accumulation in rice grains and content of Cd in soils had a positive linear correlation. The rice yields significantly decreased with increasing cadmium content in the contaminated soil, mainly reflecting the decrease of number of panicles per plant and spike lets per panicle. Both maifanite and foliar silicon fertilizer (silica sols) significantly reduced the Cd concentration in rice grains grown in the Cd contaminated soil. Moreover, the maifanite significantly increased the rice yields. Capacities of different treatment combinations on decreasing total accumulation of Cd in the rice grains were also compared in the paddy field experiments. The results showed that all the combinations effectively decreased the concentration of Cd in the grains, shoots and roots of rice grown in the severely Cd contaminated soil, averagely reducing it from 50% up to 63.59%.
机译：在本研究中进行了盆栽试验，研究了不同浓度的镉对受污染的水稻产量的影响，受不同浓度的镉污染的土壤中稻米中镉含量的相关性以及麦饭石和硅溶胶的叶面施用对水稻的影响。减轻受污染水稻土壤中镉的毒性。研究结果表明，水稻籽粒中Cd的积累与土壤中Cd的含量之间呈线性正相关。随着污染土壤中镉含量的增加，水稻产量显着下降，这主要反映出每株穗数和每穗穗数的减少。麦饭石和叶面硅肥（硅溶胶）均显着降低了在Cd污染土壤中生长的水稻籽粒中Cd的浓度。此外，麦饭石显着提高了水稻产量。在稻田试验中，还比较了不同处理组合对降低水稻籽粒中Cd积累总量的能力。结果表明，所有这些组合均能有效降低严重受Cd污染的土壤中生长的水稻的粒，茎和根中Cd的浓度，平均将其从50％降低至63.59％。

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