红锥良种区域化试验示范

Demonstration of Castanopsis hystrix Superior Species Regional Tests

红锥（Castanopsis hystrix）天然母树林的区划和改造，种子单产平均提高40．1％，千粒重和纯度平均分别提高33．9％和6％；初选出红锥优树89株；建立红锥育苗示范基地，开展了多种源多点的苗期生长比较试验、苗期变异性和相关性研究；进行了5试点10个红锥地理种源区域试验，初步评选出2个增产20．3％～22．5％的优良种源。红锥可作为优良珍贵用材林和生态林业工程的主要造林树种在南亚热带地区大力发展。

Demonstration of the natural seed production stand regional and reconstructive tests have been carried out. Results show that average seed yield increases by 40.1%, a thousand seeds and purity increases by 33.9 % and 6 %, respectively; 89 excellent Castanopsis hystrix trees have been selected preliminarily; seedling raising demonstration base of Castanopsis hytrix has been set up to carry out growth comparative test and study on variation and relativity with multiple provenances and at multiple sites; Ten geographical provenance regional tests at five sites have been carried out and two superior provenances with 20.3 % -22.5 % yield increase have been preliminarily selected. Castanopsis hytrix could be developed greatly as superior wood plantation and main plantation species in biological forestry project in lower subtropical area of China.