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闽江河口湿地短叶茳芏氮、磷含量与积累量季节变化

曾从盛1,2,3,4;张林海1,2;仝川1,2,3,4   

  1. 1湿润亚热带生态地理过程省部共建教育部重点实验室, 福州 350007;2亚热带资源与环境福建省重点实验室,福州 350007; 3福建师范大学亚热带湿地研究中心, 福州 350007;4福建师范大学地理科学学院, 福州 350007
  • 收稿日期:2008-08-25 修回日期:1900-01-01 出版日期:2009-05-10 发布日期:2009-05-10

Seasonal variation of nitrogen and phosphorus concentration and accumulation of Cyperus malaccensis in Minjiang River estuary.

ZENG Cong-sheng1,2,3,4;ZHANG Lin-hai1,2;TONG Chuan1,2,3,4   

  1. 1Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fuzhou 350007, China;2Fujian Key Laboratory of Subtropical Resources and Environment, Fuzhou 350007, China;3Research Centre of Wetlands in Sub-tropical Regions, Fujian Normal University, Fuzhou 350007, China;4College of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China
  • Received:2008-08-25 Revised:1900-01-01 Online:2009-05-10 Published:2009-05-10

摘要: 对闽江河口湿地优势植物短叶茳芏(Cyperus malaccensis)N、P养分含量与积累量进行了1年的监测。结果表明:地上部分N、P浓度的器官分配模式为花>叶>茎,绿色部分大于立枯部分,冬春季节浓度>夏秋季节;N、P积累量的器官分配为茎>叶>花,地下部分N、P浓度和积累量空间变化趋势一致,即0~15 cm>15~30 cm>30~60 cm;地上N平均浓度、N、P积累量在各个季节始终高于地下部分,但地上与地下P平均浓度的高低呈波动变化,N积累总量在秋季达到最大值(42.9 g·m-2),P积累总量在夏季达到最大值(7.3 g·m-2);P浓度和积累总量极显著地低于N(P<0.01)。从N/P比值看,N为限制短叶茳芏初级生产力的一个重要营养因子。

关键词: 番茄亚高温生长, 发育, 产量品质

Abstract: A one-year investigation on the N and P concentration and accumulation of Cyperus malaccensis in the wetlands of Minjiang River estuary showed that the N and P concentration of C. malaccensis aboveground parts was in the order of flower > leave> stem, being higher in living plants than in dead standings, and in spring and winter than in autumn and summer; while the N and P accumulation was in the order of stem>leave>flower. The N and P concentration and accumulation of C. malaccensis below ground parts were 0〖KG-*2〗-〖KG-*7〗15 cm>15〖KG-*2〗-〖KG-*7〗30 cm>30〖KG-*2〗-〖KG-*7〗60 cm. The average N concentration and the N and P accumulation of aboveground parts were higher than those of belowground parts, while the average P concentration fluctuated throughout the year. The N accumulation reached the peak (429 g·m-2) in autumn, while P accumulation had its peak (73 g·m-2) in summer. The P concentration and accumulation were significantly lower than N (P<001). From the viewpoint of N/P ratio, N was a key element limiting the primary productivity of C. malaccensis.

Key words: Tomato, Sub-high temperature, Growth, Development, Yield, Quality