木荷良种造林效果早期评价  

Early Evaluation of Afforestation Effect of the Improved Schima superba Varieties

作　　者：王建明 WANG Jianming(Mingxi County Hengfeng Forestry Co.,LTD,Mingxi 365200,Fujian,China)

机构地区：[1]明溪县恒丰林业有限责任公司,福建明溪365200

出　　处：《福建林业科技》2024年第2期66-70,148,共6页Journal of Fujian Forestry Science and Technology

基　　金：中央财政林业科技推广示范项目(闽[2016]TG08号);福建省林木种苗科技攻关六期项目(木荷专项,201904)。

摘　　要：为评估木荷1代无性系种子园良种改良的成效,优化良种造林模式和配套栽培技术措施,于2020—2021年在福建省明溪县结合营建木荷良种推广示范林,设置良种与普通商品种、不同苗龄(规格)良种容器苗和不同坡位良种测定试验林,于2022年底对2~3年生试验林的生长状况进行调查分析。结果表明:采用木荷良种造林的效果显著好于普通商品种,良种幼林的树高、地径、冠幅等生长指标均显著大于普通商品种。不同坡位木荷良种幼林地径、树高和冠幅生长总体上表现为下坡>中坡>上坡,但各坡位之间的树高生长差异不显著;下坡位的地径和冠幅生长均极显著大于中坡和上坡(P<0.01),中坡与上坡之间差异不显著。木荷良种2年生轻基质营养袋中苗造林在树高、地径和冠幅等生长量均显著高于1年生轻基质营养袋小苗造林(P<0.05)。综合结果表明,营造木荷速生丰产林应尽量选择良种容器中苗,立地条件较好的林地造林,可提早1 a即造林的第2年郁闭成林,实现高效培育。In order to evaluate the improvement effect of the first-generation clonal seed garden of Schima superba,and optimize the afforestation model of S.superba and the supporting cultivation technical measures,a demonstration forest for the promotion of S.superba was set up in Mingxi County,Fujian Province from 2020 to 2021,and a test forest for the determination of S.superba was set up with the general commercial S.superba seed and the improved one,the container seedling of S.superba seed at different seedling ages(specifications)and different slope locations.At the end of 2022,the growth status of the 2~3 year old experimental forest was investigated and analyzed.The results showed that the afforestation effect of fine seed was significantly better than that of common commercial seed,and the growth indexes of young forest were significantly higher than those of common commercial seed in tree height,ground diameter and crown width.On the whole,the growth of diameter,height and crown width in different slope positions was downhill>middle slope>upper slope,but there was no significant difference in tree height growth among different slope positions.The growth of ground diameter and crown width in downhill position was significantly greater than that in middle slope and upper slope(P<0.01),and there was no significant difference between middle slope and upper slope.The growth of tree height,ground diameter and crown width of 2-year seedling in light matrix nutrient bag was significantly higher than that of 1-year seedling in light matrix nutrient bag(P<0.05).The comprehensive results showed that the seedlings should be selected in the good seed container and the forest with better site conditions should be planted to improve the quality and yield of the stand faster.The forest can be closed one year earlier,that is,the second year of afforestation,to achieve efficient cultivation.

关 键 词：木荷 良种 容器苗 坡位 苗龄 造林效果 

分 类 号：S725.71[农业科学—林木遗传育种] S792.99[农业科学—林学]