重金属低积累作物在农田修复中的研究与应用

随着农田重金属污染的日益严重,土壤重金属污染修复技术受到广泛关注。作物吸收积累重金属不仅在种间差异显著,在种内差异也十分显著,这为重金属低积累品种的培育和筛选提供了可能。本文综述了重金属低积累作物品种筛选的原则和要求、作物积累重金属的种间和种内差异、作物低积累重金属的机制以及低积累品种在农田重金属污染修复中的应用等研究进展,并提出今后相关研究重点。

Review on Application of Low Accumulation Crops on Remediation of Farmland Contaminated by Heavy Metals

Remediation of heavy metal contaminated soils has attracted wide attention since heavy metal pollution is becoming more and more serious. Uptake and accumulation of heavy metals by crops vary significantly not only among interspecific varieties but also among intraspecific varieties, which provides possibilities for breeding and screening low accumulation crop varieties. It was reviewed the research progress on the principles and requirements for the selection of low accumulation crop varieties and interspecific and intraspecific differences in heavy metals accumulation in crops. The mechanisms of low accumulation of heavy metals in crops were analysed and the application of low accumulation varieties on the prevention and control of heavy metal pollution in farmland was discussed. The future research focus was also prospected.