寿竹不同径阶母竹造林效果比较分析

目的]研究寿竹不同径阶母竹造林在造林成本、造林成效、笋竹生长、生物量分配特征等方面的差异性,比较不同径阶寿竹母竹在造林中存在的优缺点。方法]以不同径阶寿竹母竹造林地为试验林,在同样的抚育管理下,造林4年后对全林生长指标进行实测调查及分析比较。结果]在造林成本方面,发现径阶≤2 cm母竹的造林成本分别比径阶为3~5和≥6 cm母竹造林少4 500、10 500元/hm~2;小母竹造林成林时间平均比大母竹造林成林时间早,但成材时间晚;3~5 cm径阶母竹造林形成的林分,出笋数最多,退笋率最低。结论]该研究可为寿竹母竹造林的推广种植提供理论依据。

Comparative Analysis of Afforestation by Phyllostachys bambusoides as Mother Bamboo within Different Diameter

Objective]To study the variation of the cost of afforestation, the effect of afforestation, the growth of bamboo and bamboo shoots, the biomass allocation characteristics of Phyllostachys bambusoides by mother bamboo within different diameter.And the advantages and disad-vantages were compared in the afforestation work by Phyllostachys bambusoides as mother bamboo within different diameter. Method] In the same tending and management, the growth indicators of the whole forest was carried out after 4 years, and the growth indicators were analyzed and compared. Result] The results showed that the cost of afforestation by mother bamboo with the diameter of less than 2 cm was 4500 and 10500 yuan/hm2 less than that afforestation by mother bamboo with the the diameter of 3-5 cm and more than 6 cm.The time of forest estab-lishment by Mother bamboo with little diameter was earlier than that afforestation by Mother bamboo with big diameter, but the time of growing into useful timber were late.Forests formed by Mother bamboos from 3 to 5cm diameter, the number of shoots was the highest, and the rate of degrading shoots was lowest. Conclusion] The study can provide a theoretical basis for the the actual work of afforestation by Phyllostachys bambusoides.