| Quercus acutissima Carr. is one of the most important hard broadleaf species for wood charcoal in china, and a huge poteintial exists in exploitation and utilization as forestry bioenergy. Therefore, the paper investgated the difference of growth traits among different geographical provenances of Q. acutissima, sprout regeneration as well as fertilization techniques of Q. acutissima plantations,in order to promote plantations productivity and wood quality,which by the method of combining improved variety selection with key silvicuture technologies. The main results were concluded as follows:There were very significant differences in seed morphology, 100-seed weight, nutrient component content, seedling height, ground diameter, biomass, photosynthetic rate, leaf characters, rootcharacters and wood chemical composition among different Q. acutissima geographical provenances. Geographic pattern of variation of 100-seed weight showed a bidirectional trend, e.g. decreasing gradually from southeast to northwest. The variation trend of seed length was increased gradually along North-south, while seed width showed a contrary changing tendency. The results indicated that seedling height, ground diameter and biomass production were controlled by longitude, whereas the lignin content in the woods was mainly affected by latitude. There was a significant interaction between gene and environment, so five superior provenance during 2-year-old were selected preliminarily from hilly areas of Jianghuai, Western Jiangxi, Southwest Zhejiang.Above-ground standing crop of energy in Q. acutissima plantations were greatly affected by site conditions, stand densities, stand ages and regeneration methods. The whole reclamation soil preparation by machines and interplanting with peanut were beneficial to tree growth. The growth increment in the plantations planted with super seedling and two-year-old seedling were superior to that with common seedling and one-year-old seedling, but the survival rate slightly lower than the later.The growth increment, biomass production, caloric value and energy in sprouts were significantly affected by stump heights, sprout set times and sprout numbers remained in the stump, while the wood basic density and wood chemical composition in the stumps had not significant difference among the treatments. However, a negative correlation between stump height and growth increment of sprout was observed in the study. The highest biomass production can be obtained under the combinations of the sprout set times at winter or early spring with reserving two sprouts in each stump.Fertilization had a significant influence on photosynthetic rate, biomass production, caloric value and wood basic density, but no significant influence on wood chemical composition was found. Fertilization also had significant influence on contents of hydrolyzable nitrogen, total phosphorus, available phosphorus in soil as well as contents of nitrogen, phosphorus in leaf. However, no significant diffierences in contents of potassium, calcium and magnesium in leaf were detected. Totally, the biomass and energy production increased with increasing fertilization amount. The present results suggested that 0.45 kg·tree-1 would be applied for fertilization at the research sit to promote the biomass and energy production of Q. acutissima plantations.
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