Abstract:
The seedling's livability,SOD activity,POD activity,content of photosynthetic pigment,MDA and Pro in the seedling leaves of
Tsuga longibracteata were studied after being planted for 30 days at four different water content(30%,25%,20%,15%) under four light intensity environment(100%,50%,25%,10% full day light) from 2004 to 2005.The results showed that high light intensity(100% full day light) could enhance the injury of soil drought on seedlings of
T.longibracteata,while shading could reduce it.Both high light intensity(100% full day light) and low light intensity(10% full day light) could enhance the injury of excessive soil water on the seedlings of
T.longibracteata,but medium light intensity(50% and 25% full day light) could reduce it.Under medium light intensity(50% and 25% full day light) environment,the tolerance of seedlings of
T.longibracteata on soil water stress was high.