文献类型：期刊文献

中文题名：不同年龄杨梅各器官氮、磷、钾化学计量特征

英文题名：The Ecological Stoichiometry of N,P and K in Organs of Myrica rubra of Different Ages

作者：吴家森[1] 蒋仲龙[2] 吕爱华[2] 叶柳欣[1] 王增[2] 周本智[3] 王晓晓[4] 张勇[2]

第一作者：吴家森

机构：[1]浙江农林大学环境与资源学院,浙江杭州311300;[2]浙江省林业生态工程管理中心,浙江杭州310020;[3]中国林业科学研究院亚热带林业研究所,浙江杭州311400;[4]浙江省台州市万丰林业有限公司,浙江仙居317300

年份：2019

卷号：41

期号：3

起止页码：447-453

中文期刊名：江西农业大学学报

外文期刊名：Acta Agriculturae Universitatis Jiangxiensis

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金项目(31700540);浙江省省院合作林业科技项目(2017SY13)~~

语种：中文

中文关键词：杨梅;器官;生态化学计量;分配;年龄

外文关键词：Myrica rubra;organ;ecological stoichiometry;distribution;age

分类号：S662.4

摘要：杨梅(Myrica rubra)为我国特有常绿果树,但有关杨梅不同器官氮(N)、磷(P)、钾(K)的生态化学计量特征的认识还不够充分。以浙江省仙居县杨梅人工林为对象,通过对不同年龄杨梅叶片、茎(枝)、根系中N、P、K质量分数的测定,探讨了杨梅不同年龄各器官N、P、K化学计量特征及在各器官中的分配规律。结果表明:杨梅N、P质量分数大小表现为叶、根、茎,K质量分数高低排序为叶、茎、根;随年龄的增加,杨梅叶中P、K质量分数下降,根中N、P、K质量分数均下降,而茎中的N、K则逐年增高;杨梅各器官N∶P介于12.69~42.97,N∶K介于0.89~2.16,K∶P介于9.10~26.04;随年龄的增长,杨梅叶N∶ P、K∶ P先降低而后增大,茎、根N∶ P、K∶ P逐年增高,N∶ K在叶中逐渐增高,茎中先上升而后降低,而根中则先下降而后升高。杨梅叶片的N、K平均分配比例达55.3%和43.1%,而在根系的分配比例仅为18.2%和18.4%。影响杨梅生长的限制元素是P,在生产经营过程中可适当增施磷肥。
Myrica rubra is an endemic evergreen fruit tree in China,but the distribution of nitrogen(N), phosphorus(P),and potassium(K)in different organs and ages is not well understood.Samples of leaves,stems,roots at different ages were collected from M. rubra in Xianju County,Zhejiang Province.The N,P,and K contents were measured to analyze their stoichiometry characteristics and distribution rules at different ages. The results showed that the contents of N and P were the largest in leaf followed by in boot and stem,the K content was in the order of leaf > stem>boot.With increasing age,the N,P contents decreased gradually in leaf, the N,P,K contents decreased in root;the N,K contents increased in stem.The values of N∶P were 12.69~ 42.97;those of N∶K,0.89~2.16;and those of K∶P,9.10~26.04. With increasing age,N∶P and K∶P first decreased and then increased in leaf,N∶P and K∶P increased gradually in stem and root,N∶K in leaf increased gradually,first increased and then decreased in stem,first decreased and then increased in root.The average distribution ratios of N and K in the leaves were 55.3% and 43.1%,and in the roots,the average ratios were 18.2% and 18.4%.The limiting elements affecting the growth of M. rubra was P,in the process of production, phosphorus fertilizer can be properly added.