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通过对桉树速生丰产栽培技术试验研究和分析,结果表明:树种选择在雷州半岛应以尾叶桉为主,适度发展雷林1号桉;经筛选 W5、MLA、GU1 等无性系应作为生产中大面积推广的优良无性系。采用全面机垦开沟挖穴整地方式;尾叶桉造林密度为1.33×3m,雷林1号桉为1.5×1.5m 或1×1×3m;MLA、GU1 为1.33×3m 或1.67×2m,W5为1×3m;有机肥中加入 N、P、K 复合肥配制的基肥,对林木生长有明显的促进作用;造林头3年采取追肥和松土除草的幼林抚育措施,能促进林木生长,缩短轮伐期,提高经济效益。
The results showed that the selection of tree species should mainly be the Eucalyptus urophylla in Leizhou Peninsula, and the development of Eucalyptus urophylla 1 was moderately developed. Clones W5, MLA and GU1 should be selected as production Large-scale promotion of excellent clones. The method of digging and digging is adopted in the comprehensive land reclamation and ditching. The planting density of Eucalyptus urophylla is 1.33 × 3m, 1.5 × 1.5m or 1 × 1 × 3m for Leilin 1, 1.33 × 3m or 1.67 × 2m for MLA and GU1, W5 is 1 × 3m. Adding base fertilizer with N, P and K compound fertilizer to organic manure can obviously promote the growth of trees. In the first 3 years of afforestation, the young nursery measures of top dressing and loosening and weeding can promote forest growth, Shorten the rotation period, improve economic efficiency.