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通过木麻黄造林密度、抚育间伐试验和防风效能的研究,结果表明:随着木麻黄造林密度增大,其胸径、冠幅和整齐度减少,枝下高增大。单株生物量随林分密度增加而减少,林分生物量及树干和根系占全部生物量的比率随密度增大而增加,枝条和小枝所占比率随密度增加而减少。综合木麻黄的生长和抗风害能力,基干林带后沿木麻黄造林密度以2500株/hm~2为宜。间伐起始期第6年,采用下层间伐方式、中度间伐,木麻黄生长和防护效能较好;中度间伐即保留1800株/hm~2,木麻黄林对主风害的抵御和削弱能力最强。
The results showed that as the density of Casuarina equisetifolia increased, the DBH, crown width and uniformity decreased while the branch height increased. The biomass per plant decreased with the increase of stand density. The stand biomass and the ratio of trunk and root to total biomass increased with the increase of density, and the proportion of branches and twigs decreased with the increase of density. Combining the growth and windbreak ability of Casuarina, the plantation density of Casuarina equisetifolia in the trunk belt was 2500 plants / hm ~ 2. In the 6th year of the initial thinning period, the middle layer was cut with middle thinning, and the growth and protection of Casuarina equisetifolia was better. The moderate thinning retained 1800 plants / hm ~ 2, Strong.