title: [The recycling rate of trace element Fe and Zn in agro-ecosystem using ICP-AES].
abstract: Input of trace elements Fe and Zn in the lower reach of Liaohe Plain under different fertilization systems was studied by long-term field experiment and ICP-AES analysis. The results showed that Fe and Zn were mainly from organic manure in agro-ecosystem. The residual rate of organic manure through a feeding-composting cycle in the absence of bedding materials was 21.84%, which was lower than that of organic matter fertilized to soil after one year. The recycling rate of Zn through a feeding-composting cycle was 71.9%, and the recycling rate of Fe was 81.0%.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. wtyu@iae.ac.cn
authors.forename: Wan-Tai
authors.initials: WT
authors.lastname: Yu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Ma
authors.forename: Hua
authors.initials: H
authors.lastname: Zhou
mesh_terms: D000383:Agriculture; D017753:Ecosystem; D007501:Iron; D008372:Manure; D012987:Soil / Q000737:chemistry; D014131:Trace Elements; D015032:Zinc
chemical_list: D008372:Manure; D012987:Soil; D014131:Trace Elements; D007501:Iron; D015032:Zinc