华东师范大学学报（自然科学版）Issue(6)：21-28,8.DOI:10.3969/j.issn.1000-5641.2012.06.003
崇明岛芦笋大棚土壤中硝酸盐的动态变化
Dynamic variations of nitrate contents in the asparagus greenhouse soils from Chongming Island
摘要
Abstract
The dynamic variations of nitrate contents in the asparagus greenhouse soil at different growth stages of asparagus in Chongming Island were measured. The result showed that contents of nitrate in the soils of 10-year, 4-year, and 1-year old asparagus greenhouses ranged from 248. 3 to 651. 0 mg N · kg-1 , from 18. 4 to 928. 4 mg N · kg-1 and from 52. 4 to 556. 2 mg N · kg-1 ) respectively. Generally, nitrate accumulated in the soils of all the three greenhouses. Both nitrogen fertilizer applications and plant uptakes of nitrogen caused significant variations of soil nitrate contents at different growth stages. The nitrate was most seriously accumulated in soil at late growth stage of asparagus in summer, which also resulted in heavy leach of nitrogen to the deeper layer. Soil acidifications and salinizations were found in all the three greenhouses. Nitrate accumulation was one of the important factors that caused soil salinization in the 10-year old asparagus greenhouse.关键词
芦笋大棚/硝酸盐/土壤酸化/土壤盐渍化Key words
asparagus greenhouse/ nitrate/ soil acidification/ soil salinization分类
农业科技引用本文复制引用
祁莹莹,毕春娟,虞中杰,陈振楼,许世远,孙月娣..崇明岛芦笋大棚土壤中硝酸盐的动态变化[J].华东师范大学学报（自然科学版）,2012,(6):21-28,8.基金项目
国家水体污染控制与治理科技重大专项(2009ZX07317-006) （2009ZX07317-006）
国家自然科学基金(40971259) （40971259）
上海市优秀学科带头人计划(10XD1401600) （10XD1401600）
