土壤环境污染及防治对策（Soil environment pollution and Control Countermeasures）.docVIP

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土壤环境污染及防治对策（Soil environment pollution and Control Countermeasures）.doc

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土壤环境污染及防治对策（Soil environment pollution and Control Countermeasures）

土壤环境污染及防治对策（Soil environment pollution and Control Countermeasures） Modern agriculture science and technology, third issue of resources and environmental science, 2011 Fertilizer is an important material in the farmland to increase crop yield to Effect。 Before liberation in China basically no chemical fertilizers in the early liberation of national fertilizer The application of little in the 1970s application amount of fertilizers and a sharp rise in the Consumption increased year by year. With the increase of the amount of chemical fertilizer in the soil pollution is more More serious [LA] - exergy. At the same time as people in the living standards and quality of life. High in the people more and more pay attention to the safety and quality of agricultural products. Influence agriculture now The soil environment pollution of product quality and countermeasures are discussed as follows. 1 Effects of soil environmental pollution of 1.1 heavy metals and toxic elements increased in direct harm to human health Heavy metal pollution is a major matter in the chemical fertilizer pollution to the soil into The soil after microbial degradation not only can not be in and through the food chain can continue In vivo enrichment in or can be converted into more toxic methyl compounds in In the end the body accumulated harmful to human health in the. Once the soil environment has been heavily damaged Pollution is difficult to eliminate completely. The main heavy metals are zinc and copper, Cobalt, chromium, etc. From the mining of raw materials to the production process of chemical fertilizer in the fertilizer to always brought into Some heavy metals or toxic substances in the phosphate based. Current application of our country With the fertilizer in the fertilizer accounted for about 0% of the increase in fertilizer raw materials for the production of phosphate rock in it Contains a lot of harmful elements in the process of fluoride and arsenic but also the phosphorus ore belt I