有机肥和生态肥对土壤中镉行为以及水稻生长的影响  

Effects of Organic Fertilizer and Ecological Fertilizer on Behaviors of Cadmium and Rice Growth in Cd Contaminated Soil

作　　者：张丽娜[1] 宗良纲[1] 沈振国[2] 

机构地区：[1]南京农业大学资源与环境科学学院,江苏南京210095 [2]南京农业大学生命科学学院,江苏南京210095

出　　处：《土壤通报》2007年第6期1182-1186,共5页Chinese Journal of Soil Science

基　　金：江苏省社会发展项目"土壤污染控制及修复技术的开发应用研究(BS2003029)";江苏省自然科学基金重点项目"典型区域土壤中重金属迁移累积特征研究(BK2006711-1)"

摘　　要：通过水稻盆栽试验,研究了有机肥和生态肥对镉污染土壤上水稻生长和土壤中镉形态变化的影响,以及对改善糙米品质安全性的作用。结果表明,有机肥和生态肥因性质差异,其效果不尽相同。和有机肥相比,生态肥不仅在促进水稻生长、提高水稻产量方面的作用更加显著,而且在降低土壤中有效态镉以及糙米、茎叶和水稻根中镉含量的作用效果更好。施用生态肥和有机肥使水稻体内镉含量和土壤中有效态镉含量的降低,主要是由于施用不同肥料导致的土壤中镉形态的变化。Rice pot experiment was conducted in Cd contaminated soil to investigate the effects of organic fertilizer and ecological fertilizer on rice growth,yield formation,uptake of Cd by rice and fractions of soil Cd.Results indicated that although organic fertilizer and ecological fertilizer both promoted rice growth,increased grain yield and decreased the content of Cd in rice and effective Cd content in soil,ecological fertilizer induced these effects more remarkably,comparing with organic fertilizer.The main reason that two fertilizers decreased the content of Cd in paddy and effective Cd content in soil was that they changed Cd fractions in soil.

关 键 词：CD 有机肥 生态肥 土壤-水稻系统 

分 类 号：X506[环境科学与工程—环境工程]