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不同育苗条件下杉木轻基质容器苗生长性状及相关性分析

2025-08-18孟庆银孟雯昕郑增禄黄丹泠陈道顺伊昊戚建增张涵语陈静雯王婷婷

林业科技 2025年4期
关键词:空穴杉木容器

中图分类号:S718.5 文献标识码:A 文章编号:1001-9499(2025)04-0016-04

Analysis of Growth Characteristics and Correlation of Chinese Fir Seedlings under Different Seedling Conditions

MENGQingyin1MENGWenxin²ZHENG Zenglu1HUANGDanling1CHENDaoshun (204 YI Hao1QI Jianzeng1 ZHANGHanyu1CHEN Jingwen1WANG Tingtingl (1.Guanzhuang State-owned Forest Farm,Fujian Shaxian 36505O;2.Fujian Forestry Vocational and Technical Collge,FujianNanping 353ooO;3.Fujian Youxi State Owned Forest Farm,Fujian Youxi 365100)

AbstractTo study the growth status of Chinese fir seedlings in light substrate container under different seedlingconditions.In 2024,sand buried plug and aerialplugseedling experiments willbecarried out.From the aspects of growth,biomass,interval distribution,quality index,membership function values,and correlation.The results indicate that: in addition to root dry weight and root shoot ratio,sand buried plug seedlings and aerial plug seedlings.There were significant differences (Plt;0.05) in other growth and dry weightindicators.The height,grounddiameter,heighttodiameterratio,stemand leafdryweight,rootdry weight,whole plantdry weight,root to shoot ratio,qualityindex,and of sand buried plug seedlings are26.6cm,4.6mm,57.9,3.2g,0.69g,3.9g,0.21,0.06, and 3.0611,respectively;The height, ground diameter, heightto diameter ratio,stemand leaf dry weight,root dryweight,whole plantdryweight,root to shoot ratio,quality index,and of aerial plug seedlings are 1.8g, 0.63g, 2.5g, 0.34, 0.05 ,and 2.996 7, respectively. 100% and 37.5% of the seedlings in the sand buried tray and aerial tray are distributed between (204号 20-40cm in height,respectively 98.9% and 52.3% of the seedlings in the sand buried tray and the aerial tray, respectively,are distributed between 4⋅8mm in diameter.Through comprehensive comparative analysis, Sand buried plug seedlings are superior to aerial plug seedlings.

Key wordsCunninghamia lanceolata; seedling cultivation method; growth; biomass; subordinate function values

杉木(Cunninghamia lanceolata)是我国南方特有的用材速生树种,也是福建省最重要的造林树种之一,其生长快、材质优良、用途广泛,具有较高的经济、生态和社会价值[1-3]。近年来由于极端天气的发生,对造林苗木质量提出了更高的要求,苗木是造林的物质基础,其质量与造林成活率密切相关[4-6],容器苗由于有基质袋的保护,减轻了造林对天气的依赖,延长了造林季节[7-8]。采用穴盘育苗,在造林起苗时不损伤根系,目前已经成为工厂化种苗生产工艺中的一种重要器具,为快捷和大批量生产提供了保证。鉴于此,本文开展沙埋穴盘和架空穴盘育苗对比试验,旨在为推广应用提供参考。

1材料与方法

1. 1 试验地概况

试验地设在良种繁 育基地,地处 117∘45′E⋅26∘32′N ,属亚热带海洋性 季风气候,年平均气温 15.6-19.6∘C ,年均降水量 1510-1840mm ,年均相对湿度 81.1%[9] 。

1.2试验材料与设计

2024年1月播种育苗,2024年4月初选取幼苗移栽至无纺布基质杯中,选用40孔育苗穴盘,试验设置了沙埋穴盘和架空穴盘方式来培育,每处理设置3个重复,每重复设置40株。沙埋穴盘:将容器苗放在40孔穴盘中,然后与穴盘一起埋在沙床中;架空穴盘:将容器苗置于40孔穴盘中,穴盘放在距离地面 60cm 育苗架上。

2024年12月开展各处理生长量测定,每个处理苗木测定40株,重复3次;分别随机取样,每个处理苗木10株,重复3次,温度设置 65-70°C ,烘干后测苗木茎叶和根部干质量,即为生物量。

1. 3 数据分析

采用 Excel2007 画图和SPSS19.0统计软件独立T检验,综合比较采用隶属函数分析法[10-11]。……

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