养殖污水对尾巨桉幼林生长的影响

摘要

In order to study 1.5 year old plantation of E. urophylla × E. grandis plantation irrigated with wastewater from livestock breeding operations, the effects of such wastewater on tree growth, physiological indexes and the biomass were analyzed. The results showed that the water and nutrients provided by such treatment resulted in increases in leaf area, leaf area index and average crown area of E. urophylla × E. grandis. As a result, diameter at breast height, tree height, individual volume and biomass were all significantly greater than the control (unirrigated trees). The results demonstrated that E. urophylla × E. grandis can tolerate such wastewater, in controlled applications. Consequently plantations of this species can be used for uptake and advantageous utilization of wastewater from livestock breeding operations, turning it into an economically valuable resource.%以养殖污水径流沟周边1.5 a 尾巨桉人工林为调查对象，研究分析养殖污水对林木生长量、生理指标和生物量的影响。结果表明：尾巨桉吸收了养殖污水的水分和养分之后，叶面积、叶面积指数和平均冠幅面积增大，从而促进胸径、树高的生长和林木单株材积、生物量的增加。说明尾巨桉不但有较好的耐污能力，还能化害为利，吸收固定污水中的水分和养分，促进自身生长，实现资源再生。