滩地林业有害生物防控技术研究

Control techniques to forest harmful organism on beach land

环洞庭湖拥有滩地20多万hm2,近几年来,随着杨木市场需求的迅速增长,中、高位滩地成为营造杨树速丰林基地重要区域。滩地杨树人工林的兴起,不仅使滩地的自然景观发生了变化,同时滩地的水分、光照、植被等环境因子也发生了改变,有害生物种类随地面高程提高呈递增态势,成为制约滩地杨树生长量和木材材质的瓶颈。连续6年调查研究结果表明,该地类主要有草本、藤本、木本、昆虫、鼠类、病害等林业有害生物6类23种,本文针对上述6类有害生物提出了防控技术措施。

There are 200000hm2 of beach land around Dongting Lake.With the increasing demand of poplar wood,the medium and high height beaches have become important regions for fast-growing and high-yield poplar plantation in recent years.However,the poplar plantation on beach not only changed the inherent natural landscape,but also changed the environmental factors,such as beach water,light and vegetation.Therefore,the species of forest harmful organism increased with the increase of beach surface elevation,which became the bottleneck confined the growth of poplar on beach and its wood quality.The results from continuous investigation for 6 years showed that,there were 23 species of forest harmful organism in 6 categories including herbaceous plants,rattan plants,woody plants,insects,rats and disease.In addition,the control technology was proposed.