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不同育苗方式对杉木扦插无性系生长的影响

2021-06-21王婷婷

安徽农学通报 2021年9期

王婷婷

摘 要:该研究于2020年12月在沙县官庄国有林场开展了不同育苗方式对杉木扦插扦插无性系的生长影响试验。结果表明:杉木扦插大田苗明显优于杉木扦插轻型基质容器苗,采用大田扦插培育的苗高、地径和生物量分别为37.6cm、6.6mm和6.2g,而轻型基质培育的苗高、地径和生物量分别为17.8cm、4.0mm和2.9g。

关键词:杉木;育苗方式;扦插无性系;生长量;生物量

中图分类号 S791.27文献标识码 A文章编号 1007-7731(2021)09-0076-02

Abstract: The Study carried out the determination of the growth and biomass of Chinese fir cuttings in the field and light-weight container seedlings of Chinese fir cuttings in the Guanzhuang State-owned Forest Farm in Sha County, Fujian Province in December 2020. The results showed that Chinese fir cuttings field seedlings were significantly better than Cunninghamia lanceolata cuttings in light substrate container seedlings.The height, ground diameter and biomass of the seedlings cultivated by field cuttings were 37.6cm, 6.6mm and 6.2g, respectively. The height, ground diameter and biomass of the seedlings cultivated with a lightweight substrate were 17.8 cm, 4.0mm and 2.9g, respectively.

Key words: Chinese fir; Seedling raising methods; Cutting clones; Growth; Biomass

杉木(Cunninghamia lanceolata)具有速生、干形好、材质优良、无明显病虫害等特点,广泛应用于家居、建筑等领域,也是我国南方主要人工造林、商品材树种之一[1]。近年来,随着经济的发展,环保意识的增强,市场对优质木材的需求量与日俱增,而苗木质量是影响造林效果的直接因素,为了满足造林户对优质苗木的需求,采用无性系种苗规模化繁殖是一项重要举措。从遗传学角度来分析,对于异花授粉的树种杉木,推行无性系选种是基础的无性系品种造林,可以避免因有性繁育的基因重组造成的苗木优劣差异大的缺陷,从而达到速生、丰产、优质、抗性强的目的,说明推行杉木无性系林业具有巨大的优势。目前,容器苗在林业育苗技术上得到了广泛的应用,其弥补了传统育苗方式大田实生苗受造林季节限制等诸多缺点。本试验通过测定、分析同期培育的杉木扦插大田苗和杉木扦插轻型基质容器苗的生长量与生物量来比较2种育苗方式的差异性,探讨杉木扦插轻型基质容器苗进行种苗规模化繁殖的可行性。……

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