中国农业科学Issue(18)：3818-3825,8.DOI:10.3864/j.issn.0578-1752.2013.18.010
供应铵态和硝态氮对苹果幼树生长及15N利用特性的影响
Effects of Ammonium and Nitrate Nitrogen on Growth and Properties of 15N Distribution of Apple Trees
摘要
Abstract
[Objective]The study was carried out to investigate the growth and properties of 15N allocation and distribution in field grown apple trees with dwarfing interstock. [Method] The effectiveness of different forms of ammonium and nitrate nitrogen on growth and properties of 15N distribution of apple trees were studied by using 15N tracer on 1-year-old apple tree (Fuji/SH6/Malus hupehensis Pamp Rehd.).[Result]The results showed that 46 days after fertilization the utilization rate of 15NO3-15N was 3.43%, which significantly higher than 15NH4-15N, and also the growth vigor and root-shoot ratio. The 15NO3-15N partition ratio of base stock was 27.91%, which was also significantly higher than 15NH4-15N partition ratio of base stock of 25.13%. The nitrogen efficiency of NO3--N reduced till 118 days after fertilization, the growth vigor was significantly lower than NH4+-N,and there was no significant difference between the utilization rate of 15NO3-15N and 15NH4-15N. 15NO3-15N partition ratio of base stock (31.19%) was still significantly higher than 15NH4-15N partition ratio of base stock (25.10%). [Conclusion]Fertilizer efficiency of nitrate nitrogen was much faster than ammonium nitrogen, but there was no advance in long-term cultivation conditions.关键词
苹果/硝态氮/铵态氮/15N/利用/分配Key words
apple/nitrate nitrogen/ammonium nitrogen/15N/utilization/distribution引用本文复制引用
李晶,姜远茂,门永阁,李洪娜,周乐,魏绍冲..供应铵态和硝态氮对苹果幼树生长及15N利用特性的影响[J].中国农业科学,2013,(18):3818-3825,8.基金项目
现代农业产业技术体系建设专项（CARS-28）、公益性行业（农业）科研专项（201103003）、山东省农业重大应用创新课题 （）
