CAJ | 학술논문

为探讨茶树品种对茶园土壤可溶性有机氮（SON）组成的影响，以福建省中亚热带相同成土母质、地形和土壤类型的两种相邻的不同品种（黄金桂和福云6号）茶园为研究对象，采用TOC-TN分析、离子自动分析、氨基酸自动分析、气相色谱分析和核磁共振分析等技术，分析了不同茶树品种茶园表层（0~15 cm）土壤SON含量和组成特点及其差异。结果表明：黄金桂和福云6号表层土壤氨基酸含量分别占SON总量的37.24%和30.71%，供试茶园土壤SON组成均以非氨基酸的SON占优势，但黄金桂表层土壤氨基酸含量极显著高于福云6号；两种茶园表层土壤氨基酸均以中性氨基酸占优势，但黄金桂表层土壤中性氨基酸和含硫氨基酸含量分别显著和极显著高于福云6号；两种茶园表层土壤氨基酸种类组成相同，但黄金桂表层土壤的脯氨酸、苯丙氨酸、组氨酸、异亮氨酸、亮氨酸、丙氨酸、甘氨酸和缬氨酸含量比福云6号高52.93%~100.00%。研究表明茶树品种对茶园土壤SON组成具有显著影响，应关注茶树品种对占优势的非氨基酸SON组成的影响及其在茶园生态系统中的环境效应研究。
위탐토다수품충대다완토양가용성유궤담（SON）조성적영향，이복건성중아열대상동성토모질、지형화토양류형적량충상린적불동품충（황금계화복운6호）다완위연구대상，채용TOC-TN분석、리자자동분석、안기산자동분석、기상색보분석화핵자공진분석등기술，분석료불동다수품충다완표층（0~15 cm）토양SON함량화조성특점급기차이。결과표명：황금계화복운6호표층토양안기산함량분별점SON총량적37.24%화30.71%，공시다완토양SON조성균이비안기산적SON점우세，단황금계표층토양안기산함량겁현저고우복운6호；량충다완표층토양안기산균이중성안기산점우세，단황금계표층토양중성안기산화함류안기산함량분별현저화겁현저고우복운6호；량충다완표층토양안기산충류조성상동，단황금계표층토양적포안산、분병안산、조안산、이량안산、량안산、병안산、감안산화힐안산함량비복운6호고52.93%~100.00%。연구표명다수품충대다완토양SON조성구유현저영향，응관주다수품충대점우세적비안기산SON조성적영향급기재다완생태계통중적배경효응연구。
To explore the effects of tea genotypes on soil soluble organic nitrogen(SON)compositions, two adjacent tea plantations grown with different tea genotypes(Huangjingui and Fuyun 6)with the same parent material(tuff residual deposits), soil type(Alliti-Udic Fer-rosols), and landform(hilly slopes facing east)in mid-subtropics in Fujian were selected. Topsoil samples(0~15 cm)at upper, middle and lower positions of the slope in each tea plantation were collected in summer. The compositions and their concentrations of SON were ana-lyzed using TOC-TN analyzer, Quickchem Automated Ion Analyzer, Automated Amino Acid Analyzer, Gas chromatograph and NMR Spec-troscopy. Results showed that amino acids in topsoils of Huangjingui and Fuyun 6 plantations were 37.24%and 30.71%of total SON, re-spectively. Non-amino acids were the main SON fractions in two tea plantations. The content of total amino acids in Huangjingui topsoils was significantly higher than that in Fuyun 6 soils. Neutral amino acids were the dominant fraction of amino acids in both Huangjingui and Fuyun 6 plantations, accounting for 85.20%and 80.54%of the total amino acids, respectively. Neutral and sulfur amino acids in Huangjin-gui topsoils were significantly higher than those in Fuyun 6. The compositions of amino acids in both tea plantations were the same, but the concentrations of proline, phenylalanine, histidine, isoleucine, leucine, alanine, glycine and valine were 52.93%~100.00% higher in Huangjingui topsoils than in Fuyun 6. These findings indicated that tea genotype greatly influenced compositions of SON in tea plantation soil and non-amino acids were the dominant fraction of SON. Therefore, it is important to reveal the effects of tea genotypes on non-amino acid components of SON and their environmental implications in tea ecosystems.