Study On The Effect Of Lead Pollution In Soil On Main Crops Of China

Heavy metal pollution is one of the most attentive problems in the world. Lead is the main element of heavy metal pollution, which has been noticed by environmental scientists. Lead enters into the human body through the soil-plant-human body and harms the human healthy. These thesis studies effects of soil lead pollution the different concentrations on the growth of rice and soybean, which absorbs the element of lead in the soil. Especially study formal index of plant, such as the height of plant .the number of green leaf areas, dry matter and so on in details change during growth of plant and yield with the lead pollution level increasing in the soil. This study finds the critical concentration of lead pollution, above which will seriously affect the yield of plant and human healthy, thus offering the scientific evident for improving the living environment of human being.