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