赤泥对水稻植株各部位镉含量及水稻生物量的影响

随着稻田镉污染日益严重，镉在稻田中的不断富集，直接影响水稻生长和稻米品质。本实验主要通过测定水稻各部位镉的含量以及成熟期水稻株高、穗长、千粒重等指标，分析施用赤泥对水稻植株各部位镉富集以及水稻生物量的影响。结果表明，镉在水稻植株各部位的分布为根〉茎〉〉叶〉籽实。施用赤泥可减少镉在水稻各部位的累积，并能起到促进水稻生长的作用。在本实验中按7500kg赤泥／hm2土施用赤泥可以较好地减少水稻植株对镉的吸收。

Effect of Red Mud on The Cadmium Content in Different Parts of Rice and Rice Biomass

With the cadmium pollution deterioration of farmland, the cadmium enrichment in the rice field has a direct effect on crop growth and grain quality. Through determining cadmium content in rice plants and measuring plant height, ear length, mass of 1000 grains and other important indicators, this experiment analyzed red mud on the cadmium content in different parts of rice and rice biomass. The results showed that cadmium in rice distribution in descending order： root〉stem〉〉 leaves〉seeds. Application of red mud can reduce the cadmium accumulation of each part in rice, and promote the growth of rice. The applied ratio of 7500 kg red mud/hm2 soil can better reduce the cadmium uptake by rice plants.