VIP控制技术降低稻米镉含量试验

Experiment on Reducing Rice Cadmium Content Using VIP Control Technology

摘要: 为探明镉污染稻田农艺措施修复和降低稻米镉含量的效果，开展了镉污染VIP控制技术小区试验，对试验区域水稻产量、土壤pH值、土壤和稻米镉含量进行比较分析。结果表明：通过VIP控制技术，水稻产量有不同程度的增减，土壤pH值显著增加18.18％～21.18%，土壤镉含量减少0.033～0.041 mg/kg，稻米镉含量显著降低，降幅在43.7%～64.1%。“低镉品种+优化水分管理+施用生石灰”控镉技术为降低重金属镉污染稻田稻米镉含量的最佳推广模式，经济、实用、环保又有效。

Abstract: In order to find out effects of agronomy measures to repair and reduce rice cadmium content in fields contaminated with cadmium，experiment of VIP control technology was carried out.Comparative analysis of rice yield，soil pH，soil and rice cadmium content were conducted.Results showed that VIP control technology increased rice yield by different degrees，soil pH increased by 18.18%～21.18%，soil cadmium content decreased by 0.033～0.041 mg/kg，cadmium content of rice decreased significantly，drop in 43.7%～64.1%.Cadmium control technology of“low-cadmium varieties+optimized water management+application of quicklime”was the best promotion model to reduce rice cadmium content in fields contaminated with cadmium.It was economical，practical，environmentally friendly and effective.