土壤重金属污染玉米生长影响盆栽试验研究

通过盆栽试验,研究了重金属铅对玉米生长发育和性状及产量的影响。研究表明,随着土壤铅污染浓度的升高,单株叶面积、株高、总干物质量等形态指标呈降低的趋势,平均单株穗长、穗粗、穗质量、总粒数、百粒质量下降,秃尖长度增加,玉米产量呈下降趋势。当土壤铅浓度为300 mg/kg时,玉米单产下降21%左右。

Experiment on Maize Growth of Soil Heavy Metal Pollution with Wastewater Irrigation

Through experiment,the influence of heavy metal plumbum(pb.) on corn growth,output and quality were studied.It is shown that with the increase of soil pb.content,the index,such as unit leaf area,the height,the weight,etc.were shown decreasing trend.The average corn spike length,spike diameter,unit spike weight,total grains/per spike,weight of 100 grains decreased.The average corn spike bald length increased and the corn output decreased.When soil pb.content reach to 300 mg/kg,the corn output was decreased 21%.