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林业科学 ›› 1996, Vol. 32 ›› Issue (5): 403-410.

• 论文及研究报告 • 上一篇    下一篇

油茶林生物量与养分生物循环的研究

何方1,王义强1,吕芳德1,张才学2,朱承忠3   

  1. 1. 中南林学院经济林研究所 株洲 412006
    2. 湖南省林业厅 长沙 410007
    3. 青海省林科所 西宁 810016
  • 收稿日期:1995-05-16 出版日期:1996-09-25 发布日期:1996-09-25

BIOMASS ACCUMULATION AND NUTRIENT CYCLE IN OILTEA CAMELLIA PLANTATIONS

Fang He1,Yiqiang Wang1,Fangde Lu1,Caixue Zhang2,Chengzhong Zhu3   

  1. 1. Research Institute of Nontimber Product Forest Crops, South Central Forestry College Zhuzhou 412006
    2. The Forestry Fepartment of Hunan Province Changsha 410007
    3. Qinghai Forestry Institute Xining 810016
  • Received:1995-05-16 Online:1996-09-25 Published:1996-09-25

摘要:

对不同发育期油茶林生物量与养分的生物循环进行了研究。结果表明,从幼龄期至盛果期油茶林生物量逐步积累,盛果期生物量达到16.139t/hm2,其中经济生物量为1.798t/hm2;不同发育期油茶林分的生产力不同,盛果期油茶林太阳能利用率最高,为0.2%;不同发育期油茶林光合产物在各器官的分配比例不同;不同发育期油茶林系统大量元素(N、P、K、Ca、Mg)的吸收量、存留量、归还量及输出量不同。并提出了油茶林系统施肥的监界量。

关键词: 油茶, 生物量, 养分生物循环

Abstract:

The biomass accumulation and nutrient cycle in the plantations of oiltea camellia, Camellia oleifera, were studied. Results showed that the biomass accumulation differed from one growth period to another. In the full fruit period the biomass accumulation amounted to 16.139t/hm2, including 1.798t/hm2 of economic biomass. The productivity of the plants was also varied with each growth period. In the full fruit period, the plant made the best use of solar energy, resulting in a photosynthetic efficiency of 0. 2 percent. The distributive ratio of the photosynthate in the plant's various organs changed with the growth period, too. The study also revealed that the amount of the nutrient elements, N, P, K, Ca and Mg, in terms of their absorption, retained, return and leaching varied with the growth periods. Accordingly, a minimum dosage of fertilizers to be applied is recommended.

Key words: Camellia oleifera, Biomass accumulation, Nutrient cycle