桂西北不同种源香椿、南酸枣早期表现  被引量:5

Early Performances of Toona sinensis and Choerospondias axillaris among Different Provenances from Northwestern Guangxi, China

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作  者:买凯乐[1] 朱昌叁 冯立新[1] 胡卫东[1] 苏杰南[1] 苏付保[1] 秦秀华[1] Mai Kaile;Zhu Changsan;Feng Lixin;Hu Weidong;Su Jienan;Su Fubao;Qin Xiuhua(Guangxi Eco-Engineering Vocational and Technical College,Guangxi Rare Indigenous Trees Propagation Center,Liuzhou Key Laboratory for Conservation and Utilization of Forest Resources,Liuzhou,Guangxi 545004,China;Guangxi Forestry Research Institute,Nanning,Guangxi 530002,China)

机构地区:[1]广西生态工程职业技术学院广西珍贵乡土树种良种培育中心柳州市森林资源保护与利用重点实验室,广西柳州545004 [2]广西壮族自治区林业科学研究院,广西南宁530002

出  处:《广西林业科学》2022年第2期236-240,共5页Guangxi Forestry Science

基  金:广西生态工程职业技术学院项目(201105A)。

摘  要:为给石漠化地区改造提供树种,从广西西北部地区采集香椿(Toona sinensis)、南酸枣(Choerospondias axillaris)优树种子,进行育苗与造林试验,对不同种源的种子千粒重和发芽率、苗高和地径及幼林的树高、胸径、冠幅、枝下高和病虫害情况等进行比较。结果表明,不同种源香椿、南酸枣的种子千粒重、发芽率及苗高和地径均差异显著。香椿种子中,德保和隆林种源的千粒重较大(12.54和12.58 g),德保和凌云种源的发芽率较高(84.67%和90.67%);0.8年生香椿苗木中,德保种源的苗高和地径最大(29.68和0.81 cm);在1.8年和4.8年生香椿幼林中,德保种源的树高和胸径最大,分别为2.60 m和4.37 cm及12.67 m和12.75 cm。南酸枣种子中,凌云种源的千粒重最大(2 555.67 g),凌云和隆林种源的发芽率较高(97.15%和94.67%);0.8年生南酸枣苗木中,凌云种源的地径(0.74 cm)和靖西种源的苗高(84.78 cm)最大;1.8年生南酸枣幼林中,凌云种源的树高(3.45 m)和胸径(5.29 cm)最大,隆林种源的冠幅最大(2.43 m);4.8年生南酸枣幼林中,凌云和靖西种源的树高(10.66和10.96 m)和冠幅(5.07和4.76 m)较大。德保种源香椿蛀干害虫发生严重,南酸枣主干遭风折严重。可选择德保与凌云种源造林,造林初期需加强病虫害防治。In order to supply tree species for rock desertification management, Toona sinensis and Choerospondias axillaris superior seeds were collected from northwestern Guangxi to culture and afforest. Thousand-grain weight and germination rate of seed, seedling height, ground diameter and tree height, DBH, crown width and clear bole height as well as diseases and insect pests of different T. sinensis and C. axillaris provenances were compared. Results showed that there were significant differences in thousand-grain weight and germination rate of seed, seedling height and ground diameter. In T. sinensis seeds, Debao and Longlin provenances had greater thousand-grain weights(12.54 and 12.58 g). Debao and Lingyun provenances had higher germination rates(84.67% and 90.67%). In 0.8-year-old T. sinensis seedlings, seedling height and ground diameter of Debao provenance were the largest(29.68 and 0.81 cm). In 1.8-year-old and 4.8-year-old T. sinensis young plantations, tree heights and DBHs of Debao provenance were the largest with 2.60 m, 4.37 cm and 12.67 m, 12.75cm, respectively. In C. axillaris seeds, Lingyun provenance had the greatest thousand-grain weight(2 555.67 g).Lingyun and Longlin provenances had greater seed germination rates(97.15% and 94.67%). In 0.8-year-old C. axillaris seedlings, ground diameter of Lingyun provenance(0.74 cm) and seedling height of Jingxi provenance(84.78 cm) were the largest. In 1.8-year-old C. axillaris young plantations, tree height(3.45 m) and DBH(5.29 cm) of Lingyun provenance were the largest. Crown width of Longlin provenance was the largest(2.43 m).In 4.8-year-old C. axillaris young plantations, Lingyun and Jingxi provenances had larger tree heights(10.66and 10.96 m) and crown widths(5.07 and 4.76 m). Debao T. sinensis provenance had insects injured in trunks,and most of C. axillaris trunks were broken off by wind. Debao and Lingyun provenances could be selected for afforestation. Pest control and prevention must be strengthened on initial growth stage in woodland.

关 键 词:良种选育 种源 香椿 南酸枣 石漠化 

分 类 号:S722.5[农业科学—林木遗传育种]

 

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