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。
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 plantsmade 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.
出处
《林业科学》
CAS
CSCD
北大核心
1996年第5期403-410,共8页
Scientia Silvae Sinicae
关键词
油茶
生物量
养分生物循环
Camellia oeifera, Biomass accumulation, Nutrient cycle
