施肥对大棚蔬菜地土壤水及地下水硝酸盐和亚硝酸盐污染的研究  

Nitrogen Fertilizer Effects on Nitrate and Nitrite Contamination in the Soil Water and Groundwater

作　　者：郭金芝[1] 金东日[1] 杜长青[2] 王大力[1] 

机构地区：[1]延边大学理学院化学系,吉林延吉133002 [2]吉林烟草工业有限公司技术中心,吉林长春130000

出　　处：《延边大学学报（自然科学版）》2009年第2期156-159,共4页Journal of Yanbian University（Natural Science Edition）

摘　　要：集约化蔬菜生产中所施用的氮肥对土壤水和地下水造成的硝酸盐和亚硝酸盐污染不容忽视.本文以延吉市主要大棚蔬菜生产地区两处大棚蔬菜地为例,研究了跨年度氮肥施用量与土壤水和地下水硝态氮含量的动态变化.结果表明,土壤水中的硝态氮(NO3--N)和亚硝态氮(NO2--N)浓度均高于地下水浓度.两处大棚蔬菜区浅井地下水NO2--N浓度未超出饮用水标准,但NO3--N浓度均大大超出饮用水标准,受硝酸盐污染十分严重.过量施用的氮肥是造成该农区地下水硝酸盐污染的主要原因.It has been brought great attention on nitrogen contamination because of excessively using nitrogen fertilizes, which can make different degree pollution for soil water and groundwater in a intensive vegetable cultivation area. Two vegetable gardens in greenhouse of Yanji city were selected to study the dynamic change between the application of nitrogen fertilizer during one year and the content of nitrate and nitrite. The results showed that the groundwater was severely polluted due to the high application level of nitrogen fertilizer.

关 键 词：地下水 土壤水 亚硝酸盐 硝酸盐污染 大棚蔬菜地 

分 类 号：X523[环境科学与工程—环境工程]