王熙富 黄梓雄 龙曼

摘 要： 为扩大本地乡土珍贵树种南方红豆杉资源筛选出适宜的肥料种类，2009～2012年连续4年对3种不同肥料种类南酸枣林下种植南方红豆杉的树高及地径生长量进行测定分析研究，并初步探讨了不同混交模式对南方红豆杉树高及地径生长量的影响。结果表明，不同肥料种类中南方红豆杉的生长以尿素复合肥混合施用效果最佳，4年的树高及地径生长量分别增加112.58 cm、2.62 cm，树高生长量与单施尿素、复合肥处理呈显著性差异，地径生长量无显著差异。尿素复合肥混施种植情况下，杉木×南方红豆杉比南酸枣×南方红豆杉更有利于树高的生长，且呈极显著差异;两种混交模式下南方红豆杉的地径生长量差异不明显。

关键词： 肥料種类;混交模式;南方红豆杉;树高;地径

中图分类号：S723.1文献标识码：A文章编号：1004-3020（2021）03-0013-05

Effects of Different Fertilizer Types and Mixed Modes on the Growth

of Taxus wallichiana var.mairei Young Forest

Wang Xifu Huang Zixiong Long Man

（Forestry Research Institute of Liuzhou Liuzhou 545300）

Abstract：

In order to expand the resources of local precious tree species Taxus wallichiana var.mairei，the growth of tree height and ground diameter of Taxus wallichiana var.mairei that planted under forest of Choerospondias axillaris by 3 kinds of fertilizers were determined and analyzed from 2009 to 2012 for 4 consecutive years.And effects on the growth of tree height and ground diameter of Taxus wallichiana var.mairei under different mixed modes were preliminarily discussed.Results showed that，the growth of Taxus wallichiana var.mairei fertilized with urea and compound fertilizer mixing was the best among different fertilizer types.And the growth of tree height and ground diameter increased by 112.58 cm and 2.62 cm respectively in four years.And the growth of tree height was significantly different from single application of urea and compound fertilizer，but there were no significant differences in ground diameter among these 3 kinds of fertilizers.Fertilized with urea and compound fertilizer mixing，the height growth of Taxus wallichiana var.mairei×Cunninghamia lanceolate was higher than Taxus wallichiana var.mairei×Choerospondias axillaris，which was significantly different from Taxus wallichiana var.mairei×Choerospondias axillaris.But there had no significant effects on the growth of ground diameter in both of two mixed modes.

Key words： fertilizer types;mixed modes;Taxus wallichiana var.mairei;tree height;ground diameter

南方红豆杉Taxus wallichiana var.mairei为红豆杉科Taxaceae红豆杉属Taxus喜马拉雅红豆杉T.wallichiana Zucc.的变种[1]，其果实外被樱桃大小红色肉质假种皮，形状奇特，集药用、材用、绿化观赏为一体，因其含有的紫杉醇具有抗癌作用[2]而备受关注。近些年来，由于受到过度采伐、生境丧失，再加上南方红豆杉本身的生殖生物学特性、林分更新特点、种群遗传特性等，使它的天然繁殖扩散受到一定的阻碍，野生南方红豆杉资源已呈濒危状态[3]。近些年来，人们对于南方红豆杉的栽培技术也进行了大量研究。徐玉梅等通过不同培育措施对南方红豆杉人工幼林的生长量进行统计分析，发现不同密度、不同基肥及不同遮阴度处理南方红豆杉的树高、地径、侧枝发枝数和生物量存在极显著差异[4]。……