山区生物质能源树种荆条经营技术研究

A Study on the Management Technology of Tree Species as Bio-energy Vitex negundo L. van. heterophylla in Mountain Area

[目的]筛选适宜的荆条经营技术。[方法]以多年生山区生物质能源树种实生荆条林为试验材料,进行不同平茬高度、不同轮伐期及其干质量热值、连续平茬和栽植密度等经营技术研究,分析不同处理的荆条地上部生物量。[结果]采取平茬高度控制在10 cm左右,平茬2年后要休养2年以上,种植密度为1 m×1 m,轮伐期控制在3年1次以内,能有效提高荆条基部新萌发枝的地上部生物量。[结论]通过不同平茬高度,不同轮伐期及干热值连续平茬和栽培密度等处理,可有效提高荆条枝条地上部生物量。

[ Objective ] The appropriate management technology of Vitex uegundo L. van heterophylla was selected. [ Method ] Taking perennial tree species as bio-energy Vitex hegundo var. heterophyUa seedling stand in mountain area as the test material, by researching it＇ s management technol- ogy including the height to be cut, rotation, the corresponding gross calorific value, cutting interval and planting density etc, this study analyzed the aboveground biomass of Vitex negundo L. van. heterophylla with different treatments. [ Result ] It could effectively improve aboveground biomass of new germinating branch on the basal portion of Vitex hegundovar, heterophylla by the follows：take 10 cm or so as the height to be cut, stop for at least 2 years after continuously stumping for 2 years,take 1 m x 1 m as planting density,take at least 3 years time as a cycle for stumping. [ Conclusion]It could effectively improve abovegroud biomass of new germinating branch by different stumping height, rotation, cutting interval and plantinz density etc.