摘要
广西桉树速丰林年供应木材产量约占全国木材产量的25%,对保障我国木材储备和供应起着重要作用。随着广西区桉树人工林的持续经营和多代连栽,林地土壤理化性质退化严重,土壤缺素、植物营养不均衡和病虫害频发等问题突出,生态化、标准化和机械化经营程度不高,制约了全区桉树人工林的可持续经营。以全区桉树林地估算的木材供应量仅为10.5~12.0 m^3/(hm^2·a),离30.0~45.0 m^3/(hm^2·a)的桉树人工林高产目标相差甚远,增产潜力大。基于桉树文献和广西多个国有林场现行桉树营林方案等资料,结合笔者所在团队的桉树营林实践,系统探析新时期广西桉树人工林高产稳产的影响因素,并基于生态健康与现代林业可持续经营理念提出相应的调控对策,为广西乃至华南区桉树人工林可持续经营和生产力提升提供参考。
The annual supply of Eucalyptus fast-growing forest in Guangxi accounts for about 25%of the national timber output,which plays an important role in ensuring the timber reserve and supply of China.With the continuous management and multi generation continuous planting of Eucalyptus plantation in Guangxi,the degradation of soil physical and chemical properties has become very serious,and the problems such as lack of soil nutrients,imbalance of plant nutrition and frequent occurrence of diseases and insect pests have become prominent,and the frequently occurred diseases and insect pests were found in this region.Besides,the comprehensive use of ecological,standardized,and mechanical management by forestry farm and personal proprietor was not common,which restricted the sustainable management and production of Eucalyptus plantation in the whole region.The average timber productivity that calculated from total Eucalyptus forest land use area in Guangxi Province was only 10.5-12.0 m^3/(hm^2·a),which was far from the high-yield target of Eucalyptus plantation in 30.0-45.0 m^3/(hm^2·a),and has great potential of increasing production.Based on the literature of Eucalyptus plantation and the current Eucalyptus plantation management planning in many state-owned forestry farms in Guangxi Province,combining with the ecological,standardized forest practices of our team,this paper systematically analyzed the limitation of high-stable yield of Eucalyptus plantation under the new circumstances.Finally,using the concept of ecological health and sustainable management of modern forestry,the new systematically comprehensive measures were summed up,providing technical support for the sustainable management and production promotion of Eucalyptus plantation in this region and even in tropical region of China.
作者
吴庆标
张雨蒙
陶日志
朱意宝
蓝诗玙
WU Qing-biao;ZHANG Yu-meng;TAO Ri-zhi(Forestry College of Guangxi University,Nanning,Guangxi 530004;Guangxi Nanning Forest-Chemical Biotechnology Co.,Ltd.,Nanning,Guangxi 530028)
出处
《安徽农业科学》
CAS
2020年第18期125-130,共6页
Journal of Anhui Agricultural Sciences
基金
广西大学大学生创新性实验计划(201910593324)。
关键词
桉树
系统化管理
标准化和生态化经营
广西
Eucalyptus
Systematic management
Standardized and ecological management
Guangxi Province
