污泥堆肥对生菜及其重金属形态的影响

污泥中含有大量的微生物及营养成分,对不同的作物及植物有增产和改善品质的作用。污泥中重金属对环境危害的大小,很大程度上取决于其形态分布。污泥堆肥处理试验表明,污泥里重金属的形态有一定的变化,活跃程度有所下降。通过盆栽试验表明,污泥施用对生菜产量有明显的增产作用,但植株体内重金属的积累量会上升。

Effect of Sludge Compost on Lettuce and Heavy Metal Morphology

There are abundant microorganism and nutrition in sludge which can contribute to the increase in yields and improve crop qualities.The negative impact of heavy metals in sludge is largely determined by its morphology distribution.The sludge compost treatment experiment shows that there are changes in the morphology of heavy metals and decrease in their activity.The pot experiment shows that there is an obvious increase in the yields of lettuce,but the accumulated heavy metals increase as well.