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杉木第二代改良种子园营建技术及应用成效
胡德活,林军,王润辉,郑会全,梁瑞友,晏姝,韦如萍,刘伟新,赖旭恩,吕宇宙,李彭生
广东省森林培育与保护利用重点实验室/广东省林业科学研究院,乐昌市龙山林场,广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东省森林培育与保护利用重点实验室/广东省林业科学研究院,韶关市曲江区国有小坑林场 广东 韶关,广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东省森林培育与保护利用重点实验室/广东省林业科学研究院,韶关市曲江区国有小坑林场 广东 韶关,乐昌市龙山林场,韶关市曲江区国有小坑林场 广东 韶关,乐昌市龙山林场
摘要:
种子园在林木良种化推进过程中起着重要作用。文章就广东省杉木第二代改良种子园营建技 术包括亲本选择和建园创新技术等进行概述,如亲本选择策略与标准、秋季嫁接方法、缩短种子园建园 时间的方法。同时简述了第二代改良种子园建园技术应用成效。其中,乐昌市龙山林场杉木第二代改良 种子园产量较为突出,可达 187.50 kg/hm2 ,种子质量可达到 GB 7908—1999 杉木种子质量分级 I 级水平。 此外,小坑林场第二代改良种子园子代早期生长(3 a 生)平均树高、平均胸径分别为 4.0 m、4.5 cm,增 益分别达 21.2%、40.6%。
关键词:  杉木  种子园  亲本选择  嫁接技术  秋季嫁接
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基金项目:国家重点研发计划项目课题(2016YFD0600301)和广东省林业科技创新项目(2014KJCX012-02)资助。第一作者胡德活(1962—),男,研究员,研究方向林木遗传育种;E-mail:hudehuo@163.com
Establishment Techniques for Improved Second Generation Seed Orchard of Chinese Fir and Its Applying Achievement
HU Dehuo,LIN Jun,WANG Runhui,ZHENG Huiquan,LIANG Ruiyou,YAN Shu,WEI Ruping,Liu Weixin,LAI Xuen,LV Yuzhou and LI Pengsheng
Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Longshan Forest Farm of Lechang,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Xiaokeng State Forest Farm in Qujiang District of Shaoguan,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Xiaokeng State Forest Farm in Qujiang District of Shaoguan,Longshan Forest Farm of Lechang,Xiaokeng State Forest Farm in Qujiang District of Shaoguan,Longshan Forest Farm of Lechang
Abstract:
Seed orchard plays an important role in promotion of improved tree specises. This paper summarizes the establishment techniques for improved second generation seed orchard of Chinese fir (Cunninghamia lanceolata) in Guangdong, including the selection steps for the parent clones and establishment-regulation techniques with the focus on the parent selection strategy, criterion, grafting technique (autumn) and the shorting seed orchard establishment time method. The applying achievement of these techniques was also evidenced herein. This report provided a reference for the establishment of advanced-generation Chinese fir seed orchard in the near future. Strikingly, the improved second generation seed orchard of Chinese fir in Longshan Forest Farm of Lechang had remarkable success in seed production with a 187.50 kg/hm2 level and GB 7908—1999 qualified “I”seed . Moreover, the 3-year-old progenies of the Chinese fir improved second generation seed orchard expressed very well in height (4.0 m in average) , DBH (4.5 cm in average) with a realized gain of 21.2% and 40.6% respectively.
Key words:  Chinese Fir  seed orchard  parent selection  grafting technique  grafting in autumn