Examine the growth ability of Calamus tetradactylus Hance (K83 clone) in the models of agricultural extension project in buffer zone of Ba Vi National Park
Keywords:
Calamus tetradactylus Hance, growth, buffer zone, Ba Vi National ParkAbstract
The high survival rates (from 95.3 to 97.1% in average) of Calamus
tetradactylus Hance (clone K83) was found in the trial model in three
investigated communes in buffer zone of Ba Vi National Park. After
planting from four to six months, the growth of C. tetradactylus was
become staidly; and the new generation (new branches) of this species was
found in each clump. In addition, more branches were found in this period
with higher birth rates of new branches being recorded. The highest
diameter increment of C. tetradactylus was found in understory planting
model (1.06cm in average), while the other models had lower growing rates
with average diameter being 0.98cm in garden planting model and 0.96 cm
in the fence lines planting model. By contrast, the highest height increment
at age of 2.5 years was found in the model of fence lines planting
(220.2cm), followed by the figure of garden planting model (184.3 cm) and
the lowest height of understory planting model, the average height was only
174.3 cm. It is also noted that the quality of C. tetradactylus in all most all
models increased (from 31.2% to 59.4% between age 1 and 2 years olds).
References
1. Vũ Văn Dũng, Lê Huy Cường, 1996. Gây trồng và phát triển mây song. NXB Nông nghiệp.
2. Nguyễn Quang Khải, Trần Ngọc Hải, 1999. Báo cáo kết quả dự án: “Nghiên cứu phân bố địa lý, khí hậu và điều kiện thích hợp cho sự nảy mầm của 5 loài song mây có giá trị kinh tế cao ở Việt Nam”.
