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[1]李 曼,靳冰洁,钟全林,等.氮磷添加对刨花楠幼苗叶片N、P化学计量特征的影响*[J].应用与环境生物学报,2016,22(02):285-291.[doi:10.3724/SP.J.1145.2015.06022]
 LI Man,JIN Bingjie,et al.Effect of nitrogen and phosphorus fertilization on leaf N and P stoichiometriccharacteristics of Machilus pauhoi seedlings*[J].Chinese Journal of Applied & Environmental Biology,2016,22(02):285-291.[doi:10.3724/SP.J.1145.2015.06022]
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氮磷添加对刨花楠幼苗叶片N、P化学计量特征的影响*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
22卷
期数:
2016年02期
页码:
285-291
栏目:
研究论文
出版日期:
2016-04-25

文章信息/Info

Title:
Effect of nitrogen and phosphorus fertilization on leaf N and P stoichiometriccharacteristics of Machilus pauhoi seedlings*
作者:
李 曼1 2 靳冰洁1 2 钟全林1 2 3 马玉珠1 2 卢宏典1 2 郭炳桥1 2 郑 媛1 2 程栋梁1 2 3**
1福建师范大学地理科学学院 福州 3500072湿润亚热带山地生态国家重点实验室培育基地 福州 3500073福建省植物生理生态重点实验室 福州 350007
Author(s):
LI Man1 2 JIN Bingjie1 2 ZHONG Quanlin1 2 3 MA Yuzhu1 2 LU Hongdian1 2 GUO Bingqiao1 2ZHENG Yuan1 2 & CHENG Dongliang1 2 3**
1College of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China2State Key Laboratory Breeding Base of Humid Subtropical Mountain Ecology, Fuzhou 350007, China3Fujian Provincial Key Laboratory of Plant Ecophysiology (Fujian Normal Unive
关键词:
刨花楠幼苗施肥生态化学计量学叶片养分土壤养分N:P
Keywords:
Machilus pauhoi seedlings fertilization ecological stoichiometry leaf nutrients soil nutrients N:P
分类号:
Q945.79
DOI:
10.3724/SP.J.1145.2015.06022
摘要:
以刨花楠(Machilus pauhoi)幼苗为研究对象,通过盆栽施肥试验,探讨不同氮(N)、磷(P)供应水平下刨花楠叶片N、P元素含量的动态变化及与土壤养分的相关性. N、P处理各设定4个梯度,N1、N2、N3、N4及P1、P2、P3、P4,N、P肥施加量分别是初始土壤的2倍、4倍、8倍和16倍,不同N、P处理共用一组对照(CK),共9种处理,每组处理3个重复,并分别于3月、7月、11月对成熟叶片及土壤进行采样分析. 结果显示:刨花楠幼苗叶片N、P含量及N:P值分别为14.63-26.53 mg/g、0.64-1.84 mg/g和10.04-23.21. 施N肥叶片N含量及N:P随季节变化呈现出低(3月份)—高(7月份)—低(11月份)的变化趋势,叶片P含量呈现高—低—高的趋势;施P肥叶片P含量也随季节变化呈现出先升高后降低的变化趋势. 施N或施P显著增加了刨花楠幼苗土壤及叶片的N、P含量,分别增加或降低土壤及叶片的N:P值(P < 0.05);施N或施P也显著影响了土壤pH(P < 0.05)及叶片N、P含量与土壤养分的关系. 综上表明土壤中N、P供应量影响刨花楠叶片中的N、P含量. (图3 表2 参43)
Abstract:
For a comprehensive understanding of the nutrient conservation mechanism of Machilus pauhoi in the subtropicalzone, we need to know the response of leaf nutrient contents to fertilizers. This paper aimed to study the effect of nitrogen andphosphorus fertilization on leaf N and P stoichiometric characteristics of M. pauhoi seedlings. A microcosm experiment withN and P fertilization was designed to observe the dynamic change of leaf N, P content and their correlation with soil nutrients.The treatments included 5 levels of N addition of 0, 2, 4, 8, 16 times of initial soil, respectively, as control (CK), N1, N2, N3,and N4; P addition of the same gradients as CK, P1, P2, P3, and P4; we did three replicates for each treatment. The resultshowed a range of 14.63-14.63 mg/g for leaf N, 0.64-1.84 mg/g for P content and 10.04-23.21 for the N:P ratio of M. pauhoiseedlings. By N fertilization, a low–high–low pattern was observed in the leaf N content and N:P ratio, but an opposite patternin the leaf P content; by P fertilization, the leaf P content first decreased then increased with the season. N or P fertilizationsignificantly increased the leaf and soil N or P content respectively, and both significantly affected the soil pH (P < 0.05), theleaf N,P content and soil nutrient relationship. N addition improved the stoichiometric ratio, while P addition reduced it (P < 0.05).The results indicated that the N and P content in soil would affect the leaf N and P content of Machilus pauhoi seedings.

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更新日期/Last Update: 2016-04-25