关键词: 大花蕙兰, 花期, 调查

Abstract: A detailed observation on the florescence of Cymbidium Golden Elf‘Sundust’was done during 2000 - 2003 in order to find the rules of florescence and leaf buds growth in different time. The preliminary results showed: (1) The buds of leaf and flower appeared throughout the year, it took 6 - 10 months for leaf buds to develop into mature individual with 6 - 8 leaves. And flower buds developed into scape with 6 - 9 flowers one month later. (2) Florescence rate relates with plant mature degree, and it took 5 - 11 months for leaf buds to develop into floral buds. The burgeoning rate was the highest when the plant grew about 7 - 9 months. (3) Growth time of leaf buds relates with the burgeoning floral bud rate, and the burgeoning rate was the highest after the leaf buds developing into mature plant during 8 - 9 months (almost half of a year). (4) Florescence rate was different every month. The fastigium was from April to July (72.83% and 78.56% in 2001 and 2002) , and the least time was from December to January of the next year (4.11% and 5.03% ). It was suggested that we would leave the leaf buds in anticipative time to control the growth of other leaf buds to modulate the florescence of the plants.

Key words: Cymbidium hybridium, Florescence, Observation