桉树生态问题及发展思路

列举了桉树生态问题争论的主要事件及焦点,阐述了桉树的水分利用、养分消耗和化感作用,在对桉树生态问题进行评价的基础上,提出了正视桉树人工林的生态问题,强化规划、设计、施工监督和质量管理;遗传育种应由单一性状向多性状转变,培育具有节水保肥的新品种和优良无性系;注重桉树菌根等新技术的研发与应用,提高桉树对土壤养分的有效利用和保水能力;采取综合营林措施,维护桉树林的土壤养分平衡;开展固氮菌接种和维持林地的持久生产力等桉树发展思路。

Ecological problem and development countermeasure of Eucalyptus

Main affairs and focus on debating ecological problem of eucalyptus was enumerated,and water use,nutrient consumption and allelopathy of Eucalyptus plantation was illuminated.Based on evaluating Eucalyptus ecological problem,the author put forward countermeasure of Eucalyptus development in follows:Enhancing programming,designing,silvicultural inspecting and quality management to minimize environment hazard of Eucalyptus,Heredity breeding from singlecharacter to multi-character to grow good seedling and clone with lower water and nutrient consumption.Applying mycorrhiza technique to raise water and soil nutrient use efficiency of Eucalyptus plantation.Adopting comprehensive silvicultural measure to improve the availability of water and nutrients.Carrying out Eucalyptus inoculated with azotobacter and mixed stands of Eucalyptus and nitrogen-fixing plants to maintain high site productivity for a long time.