The Interaction between Heavy Metals and Inorganic Nitrogen in the Soil

Soil is significant to study the interaction between different forms of soil inorganic nitrogen and heavy metals of soil pollution.It is shown that nitrogen in the fertilizer efforts the active of heavy metal,mainly through the way of denitrification to ammonium nitrogen,and alkalization of the effect to rhizosphere acidification:ammonium nitrogen reduce the rhizosphere soil pH,increase the activity of heavy metals,promote the absorption of heavy metals in soil,and the effect of nitrate is on the opposite.Therefore,we can choose different forms of nitrogen supply to control the heavy metal absorption in the soil.Heavy metals have significant impact on the conversion of nitrate in soil,so the inorganic nitrogen can be chosen as a reflection of heavy metal toxicity on soil ecology of early diagnosis.