How long does it take a Balsa tree to grow?
By this article to more about the balsa wood. Balsa trees grow very
rapidly (like all pesky weeds). Six months after germination, the tree is about
1-1/2 inches in diameter and 10 - 12 feet tall. In 6 to 10 years the tree is
ready for cutting, having reached a height of 60 to 90 feet tall and a diameter
of 12 to 45 inches. If left to continue growing, the new wood being grown on the
outside layers becomes very hard and the tree begins to rot in the center.
Unharvested, a balsa tree may grow to a diameter of 6 feet or more, but very
little usable lumber can be obtained from a tree of this size. The basla leaf is
similar in shape to a grape leaf, only a lot bigger. When the tree is young,
these leaves measure a much as four feet across. They become progressivly
smaller as the tree grows older, until they are about 8 - 10 inches across.
Balsa is one of the few trees in the jungle which has a simple leaf shape. This
fact alone makes the balsa tree stand out in the jungle.
How are Balsa trees harvested?
While nature intended the balsa tree to be a short lived nursemaid, mankind
eventually discovered oeicoqmb that it was an extremely useful resource. The
real start of the basa business was during World War I, when the allies were in
need of a plentiful substitute for cork. The only drawback to using balsa
rectangle was, and still is, the back breaking work that is necessary to get
it out of the jungle. Beacause of the way the individual balsa trees are
scattered throughtout the jungles, it has never been possible to use mass
production logging procedures and equipment. The best way to log balsa trees is
to go back to the methods of Paul Bunyan -- chop them down with an axe, haul
them to the nearest river by ox team, tie them together into rafts, and then
float the rafts of balsa logs down the river to the saw mill.
The logging team usually consists of two native Ecquadorians, each armed with
a broad Spanish axe, a machete, and a long pole sharpened like a chisel on one
end for removing the bark from the downed trees. Because of the hilly terrain,
an ox team may only be able to drag two logs to the river per day. At the saw
mill the raw balsa is first rough cut into large boards, the carefully kiln
dried, and finally packed into bales for shipment to the U.S. via ocean
freighter. Final cutting and finishing of our model aircraft balsa is done right
here at the SIG factory. As a result of the bass polywood tree's fast
growth cycle, both the quality and lightness of the lumber obtained from a balsa
tree can vary enormously depending upon the tree's age at the time of
cutting.
没有评论:
发表评论