土壤重金属污染程度对农作物生长的影响研究

Analysis on Influence of Soil Heavy Metal Pollution on Crop Growth

为分析土壤重金属污染程度对农作物生长的影响,设计实验选取玉米与水稻两种农作物,设计实验田,获取农作物出苗率及成活率、生长状态、果实品质等指标数值;分析数据可知,随着土壤重金属污染程度的升高,农作物出苗率及成活率指标数值下降趋势较为明显,生长状态指标数值变化幅度较小,果实品质指标数值几乎不发生变化;当实验旱田土壤重金属污染程度低于500 mg/kg,实验水田土壤重金属污染程度低于700 mg/kg时,农作物(玉米与水稻)受土壤重金属污染程度影响微乎其微,能够正常生长。

In order to analyze the impact of soil heavy metal pollution on crop growth,the experiment was designed:corn and rice were selected to design the experimental field,and the index values of crop emergence rate and survival rate,growth state,fruit quality and so on were obtained.The analysis data showed that with the increase of soil heavy metal pollution,the index values of crop emergence rate and survival rate decreased more slowly.Obviously,the growth index value changed little,and the fruit quality index value almost did not change.When the heavy metal pollution degree of dry soil was less than 500 mg/kg,and the heavy metal pollution degree of paddy soil was less than 700 mg/kg.the crops(corn and rice)were little affected by the heavy metal pollution degree of soil,and could grow normally.