江西农业学报Issue(6)：125-128,136,5.
寿光设施菜地土壤养分累积与农产品硝酸盐污染研究
Studies on Soil Nutrient Accumulation in Protected Vegetable Land and Nitrate Pollution of Agricultural Products in Shouguang City
摘要
Abstract
Seven typical protected vegetable planting areas of Shouguang city were selected as the studied areas , the chemical and physical properties of soil and groundwater as well as the nitrogen pollution of agricultural products in these areas were investiga -ted and evaluated.The results showed that cultivated soil acidification in these vegetable planting areas was not found , and their av-erage pH-value was 8.10.The average EC value of the cultivated soil was 0.339 mS/cm, and it showed a significantly linear cor-relation with the nitrate nitrogen content in the soil (R 2 =0.7429).The average organic matter content in topsoil soil reached 31.9 g/kg, and 57%of the soil samples contained above 30 g/kg organic matter.The nitrate nitrogen accumulation status in 0~150 cm soil layer showed a near “S” curve, and nitrate nitrogen in 90~150 cm soil layer had great deal of accumulation .While ammoniac nitrogen accumulation in 0~150 cm soil layer showed a typical “S” curve, and ammoniac nitrogen accumulated mainly in 90~120 cm soil layer.The accumulation curves of available phosphorus and available potassium were similar to a “adverse L” curve, and their contents obviously decreased with the increase of soil depth .The accumulation amount of available potassium in 90~150 cm soil layer was higher than that of available phosphorus .The average nitrate content in the studied 21 agricultural product samples was 109.34 mg/kg, and the highest nitrate content was 176.09 mg/kg.So the obvious nitrate pollution of agricultural product sam-ples was not found.关键词
氮素/土壤/硝酸盐污染/设施菜地/寿光Key words
Nitrogen/Soil/Nitrate pollution/Protected vegetable land/Shouguang分类
农业科技引用本文复制引用
高新昊,刘苹,刘兆辉,李彦,江丽华,郑福丽..寿光设施菜地土壤养分累积与农产品硝酸盐污染研究[J].江西农业学报,2013,(6):125-128,136,5.基金项目
环保公益性行业科研专项重大项目（201109018）；“泰山学者（农业面源污染防控岗位）”建设工程专项经费资助项目。 （）
