土壤锌自然消减的研究进展

从影响土壤锌自然消减的因素方面，阐述了锌自然消减的研究进展。土壤锌自然消减受温度、水分、pH值、有机质、改良剂、化学肥料、栽培植物等因素的影响。温度降低、pH升高和淹水均使土壤中锌的有效性降低。种植超积累植物如遏蓝菜、紫花苕子、印度芥菜等，可以超量吸收土壤中的锌，加速锌的消减。土壤中的某些动物和微生物有吸收利用锌的特性，蚯蚓对锌有良好的富集作用。采取农业措施如施用有机肥、化肥、加入改良剂，栽培植物等，都能降低污染土壤中锌的有效性。文章还提出了该方面今后的研究重点。

Natural attenuation of zinc in soil

This paper mainly introduced the process of natural attenuation of zinc in soils from the effects of major factors including soil temperature, moisture, pH, organic matter, amendable and organic materials, chemical fertilizers, cultivating plants, etc. The phytoavailability of zinc in soil decreased with the decreasing in temperature, pH and with the flooded condition. Using hyperaccumulator such as Thlaspiaerulecsens, Vicia Villosa and Brassica juncea could hyper-accumulate zinc and accelerate the attenuation of zinc in soil. Some animals and microorganisms, such as earthworms in soil had the function to absorb and use zinc by themselves. The phytoavailability of zinc in soil also could be reduced by agricultural measures such as applying manure, chemical fertilizer, amending materials such as lime to acid soil and cultivating crops. Moreover, the paper put forward the main research points in the future.