Supported by"Research on Nitrate Nitrogen Eluviation and Water Adjustment through Intercropping of Vegetables with Different Root Lengths"of Beijing Science and Technology Star Plan(B)(2007B045);"Effects of Fertilizer Sources on Heavy Metals in Soils and Vegetable Quality"of Foundation for Distinguished Scholars in Beijing(D)(2010D002020000004);"Research on Mutation Rules of Key Indices in SoilEnvironment for Tomato with High-production"of Foundation for Youths of Beijing Academy of Agricultural and Forestry Sciences(QN201103)~~
[Objective] The aim was to investigate effect of intercropping and nitrogen regulation on nitrate and apparent loss of nitrogen, providing theoretical references for reasonable fertilization and pollution reduction. [...