不同栽培模式对凹叶厚朴生长的影响

Influence of Different Cultivation Patterns on the Growth of Magnolia officinalis subsp. biloba

摘要: 本文开展了凹叶厚朴纯林和混交林两种栽培技术的研究，分析结果表明：两种栽培模式中，混交栽培表现更好，且凹叶厚朴、马尾松的混交比例以5马5朴较为合理，而杉木与凹叶厚朴混交效果较差。混交模式下凹叶厚朴的平均胸径数据优于纯林模式，比纯林栽培的平均胸径增加1.91%；凹叶厚朴混交的平均树高比纯林种植高91.33%，且混交林种间关系更为缓和，因此平均树高数据能表现得更好；在平均胸径和平均树高数据的影响下，混交栽培的凹叶厚朴单株立木材积相对于纯林多145.16%。不同立地条件对凹叶厚朴平均树高、平均胸径有明显不同，立地条件好的地块对凹叶厚朴树高、胸径和材积生长都非常有利。

Abstract: This article conducted a study on two cultivation techniques: pure and mixed forests of Magnolia officinalis subsp. Biloba. The analysis results showed that the mixed cultivation performance was better in the two cultivation modes, with a reasonable mixing ratio of five Pinus massoniana to five Magnolia, while fir and Magnolia officinalis subsp. biloba is less effective. The average breast diameter data of Magnolia officinalis subsp. biloba was better than those in pure forest mode, and the average breast diameter was increased by 1.91% compared with that of pure forest cultivation. The average tree height of mixed Magnolia is 91.33% higher than that of pure forest planting, and the interspecies relationship of mixed forest was more moderate, so the average tree height data could perform better. Under the influence of average breast diameter and average tree height data, the single standing timber volume of Magnolia officinalis subsp. biloba in mixed cultivation was 145.16% higher than that of pure forest. The average height and average breast diameter of Magnolia officinalis subsp. biloba was significantly different from those of different sites, and plots with good site conditions were very favorable to the height, breast diameter, and volume growth of Magnolia officinalis subsp. biloba.