【摘要】 为探索基于现有种植制度下,不同施肥措施对重金属污染农田土壤修复治理效果,本研究通过田间试验,分析化肥单施、化肥配施石灰、化肥和有机肥配施、化肥有机肥和石灰配施对农田土壤镉、汞、砷、铅和铬5种重金属含量的影响。结果表明,土壤重金属镉和砷含量超标的污染农田中,以上四种施肥措施可以使当季土壤镉、砷、铅和铬含量分别降低0.22～0.31mg/kg、7.6～13.8mg/kg、15.17～24.23mg/kg和1.53～5.93mg/kg。成熟期水稻籽粒重金属镉含量下降0.539～0.816mg/kg,汞、砷和铅分别降低0.001～0.002 mg/kg、0.021～0.032 mg/kg和0.022～0.061 mg/kg。更多还原

【Abstract】 In order to explore the effect of different fertilization measures on remediation of Heavy Metal Contaminated Farmland Soil under the existing cropping system. In this study,Analysis of effects of 5 heavy metals on cadmium,mercury,arsenic,lead and chromium in farmland soil by different fertilization measures on chemical fertilizer single application,chemical fertilizer combined with calcium lime,chemical fertilizer and organic fertilizer application,chemical fertilizer and organic fertilizer and calcium lime combined application. The result shows that,The above four agronomic measures can reduce the content of 0.22-0.31 Cd mg/kg,7.6-13.8 As mg/kg,15.17-24.23 Pb mg/kg and 1.53-5.93 Cr mg/kg in the soil,respectively. The cadmium content in mature rice grain decreased by 0.539-0.816 mg/kg. Mercury,arsenic and lead decreased0.001-0.002 mg/kg,0.021-0.032 mg/kg and 0.022-0.061 mg/kg,respectively.更多还原