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通过对福建沿海大面积木麻黄低效林改造的定位试验,探讨不同类型低效林的改造方式、适宜树种和配套措施,确定木麻黄低效林改造的综合技术及其优化组合。5年的试验结果表明,在滨海前沿基干林带采用间隔带状改造方式的效果最好,在滨海沙地后沿采用块状改造方式的效果最佳。采取挖大穴深栽、客土施肥和抚育管理等配套措施,有助于提高防护林的保存率和生长势,恢复并增强林分的防护效能。木麻黄不同类型低效林改造方式、树种及配套措施的大面积推广应用,低效林改造后各树种保存率,以及树高、胸径和冠幅年平均生长率均显著提高,林分防护效能也有明显增强。
Based on the experiment of rebuilding a large area of Casuarina equisetifolia in coastal area of Fujian, this paper discusses the ways of rebuilding different kinds of inefficient forests, the suitable tree species and supporting measures, and determines the comprehensive technology and its optimization combination of rebuilding Casuarina equisetifolia. The results of five years show that the effect of interval strip transformation is the best in the forested coastal forest belt and the block transformation method is the best in the coastal sandy land. Adopting measures such as digging deep and deep pits, applying soil fertilization and tending management to other places will help increase the conservation rate and growth potential of the shelterbelt, and restore and enhance the protective effectiveness of the shelterbelt. The different types of inedible forest of Casuarina transform ways, species and supporting measures of large-scale popularization and application of low-efficiency forest transformation of the species conservation rate, as well as the tree height, diameter and crown average annual growth rate were significantly increased, stand protective effectiveness Also significantly enhanced.