title: [Effects of applying controlled-release fertilizer blended with conventional nitrogen fertilizer on Chinese cabbage yield and quality as well as nitrogen losses].
abstract: An open field experiment was conducted to study the effects of applying controlled-release fertilizer blended with rapidly available chemical N fertilizer on Chinese cabbage yield and quality as well as nitrogen losses, including ammonia volatilization and NO3- -N accumulation and leaching in Beijing suburb. The results showed that a combined application of 2:1 controlled-release fertilizer and urea fertilizer (total N rate 150 kg x hm(-2)) did not induce the reduction of Chinese cabbage yield, and decreased the leaf nitrate and organic acid contents significantly, compared with conventional urea N application (300 kg x hm(-2)), and had no significant difference in the cabbage yield and leaf nitrate content, compared with applying 150 kg x hm(-2) of urea N. The combined application of 2:1 controlled-release fertilizer and urea fertilizer improved the N use efficiency of Chinese cabbage, and reduced the ammonia volatilization and NO3- -N leaching. At harvest, the NO3- -N concentrations in 20-40, 60-80 and 80-100 cm soil layers were significantly lower in the combined application treatment than in urea N treatment.
authors: Institute of Plant Nutrition and Resource, Beijing Academy of Agricultural and Forest Science, Beijing 100097, China. jungangyang@163.com
authors: Jun-gang
authors: JG
authors: Yang
authors: Kai
authors: K
authors: Xu
authors: Er-jian
authors: EJ
authors: Tong
authors: Bing
authors: B
authors: Cao
authors: Xiao-hui
authors: XH
authors: Ni
authors: Jun-xiang
authors: JX
authors: Xu
mesh_terms: D018533:Biomass; D001937:Brassica / Q000254:growth & development*; D002681:China; D005308:Fertilizers; D060587:Groundwater / Q000032:analysis; D009584:Nitrogen / Q000032:analysis / Q000494:pharmacology*; D011786:Quality Control; D012987:Soil / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D005308:Fertilizers; D012987:Soil; D014874:Water Pollutants, Chemical; D009584:Nitrogen