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《自然资源》 1993-03
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REGULATIONS OF FAST GROWTH OF THE REGENERATION SEEDLINGS IN SUB-ALPINE DARK CONIFEROUS FOREST OF WESTERN PART OF SICHUAN PROVINCE

Liao Guangyao (Sichuan Forestry College, Dujiangyan City, 611830)  
The regulations of fast growth of regeneration seedlings in sub-alpine coni-ferous forest in the west part of Sichuan province is decided by the genetic potentiality of the tree species, seasons, elevation and habitats Fast growth of the regeneration seedlings began from after the middle of May, and stopped atearly auaumn. The growth of the seedlings changed in slow - quiak-slowpattern along with the variation of the seasons. The three basic of temperature points on three fast growth regeneration seedlings of fir and spruce have been identifed. The lowest temperature point of the fast growth seedlings of Flaky Fir (Abies squqmata)ranks at the lowest. The Scalybark Spruce.(Picea balouriana) ranks at the middle and the Balfour Spruce (Picea retroflexa) has the highest low temperature point of fast growth. All of these three seedlings have the same high temperature points of fast growth i.e. 13.1℃ and the suitable temperature point, 10°-11.6℃
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