Land
1. Ground water level: more
than 1.5m.
2. Soil texture: permeablility
or breathability good loam and sand soil, avoid clay, harden,
ventilation adverse soil.
3. PH of soil, 6-7.5 is the
best, 5-8.9 is acceptable.
4. Good irrigation and drainage
systerm will be better.
Elevation up to 2000m is
acceptable
Water
1. Fecund and wet. No ponding
and water saturation
2. Annual rainfull
400mm-1200mm.
3. In seedling period, keep the
soil with good moisture(20-40%), after grow up than 50cm drought
resistant ability improve,then better and better.
attention please: water
enough, no ponding, keep soil breathing
Sunshine
1. Plant paulownia tree in
sunny place and keep away from heavy wind.
2. Try to prohibit paulownia
tree under other bigger trees
3. Density. For seedling using
0.8x1m or 1x1m distance, for forestation 4x4m or bigger distance.
Plant with crop distance
more than 3x15m
Temperature
Annual temperature 12-20celsius degree grow better; -20-+45celsius
degree is ok, vulnerable to frost damage if absolute temperature less than
-25celsius degree.
Fertilizer
At the first, for paulownia seed, paulownia root and paulownia
stump, and other paulownia planting, give little fertilizer, and in the
future: less quantity fertilizer and
much more times
.
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