关键词: 油茶, 优树筛选, 调查

Abstract: [Objective] The resource of Camellia oleifera in Mingqiongtaidi was investigated and analyzed. Some proposals and measures for improving C. oleifera industry were putted forward. [Method] The resource of C. oleifera was investigated and analyzed by field investigation and laboratory analysis. [Results] There were 504 530.0 individuals of C. oleifera distributed in the survey area of 4 557.7 hm². Nevertheless, the production of C. oleifera was low due to extensive management. Based on the germplasm resource investigations of C. oleifera in this area, four high quality individuals including Chuanya 20, Chuanya 21, Chuanya 28 and Chuanya 31 were selected through preliminary, repeated and final selection. The weight of fresh fruit were from 10.90 g to 25.83 g;the yields of unit crown area ranged from 2.0 kg/m² to 2.80 kg/m²;the fresh and dry seed-producing rates were 41.60%~44.01% and 25.15%~25.93%, respectively;The dry seed kernel rate was 67.32%~69.30%;The oil extraction rate in the kernel was 42.12%~45.56%. [Conclusion] The resource of C. oleifera were widely distributed in Mingqiongtaidi and all indicators of C. oleifera plus-tree had reached the national criteria. Therefore, C. oleifera resource has a considerable potential for exploitation and utilization in this area.

Key words: Camellia oleifera, plus-tree selection, survey