【摘要】 根据国内外有关研究材料,概述木麻黄防护林更新和低效林改造方面的研究进展。简要介绍木麻黄更新障碍,即更新困难、连栽导致地力和林分产量降低的问题,原因主要是木麻黄品种退化、沙地缺水肥和自毒作用。木麻黄防护林的更新方式主要有间隔带状、块状更新和林下更新等方式,防护林更新的主要措施包括更新树种选择、适生优良品系应用、加强营养管理和水分管理等方面。低效林的改造方式大致有全面改造、带状改造、隔行套种和局部补植等方式,低效林改造措施包括营建木麻黄混交林、抚育间伐、客土施肥、林带结构调控、土壤管理等方面。更多还原

【Abstract】 In this paper,research advance of regeneration of Casuarina protection forest and transformation of Lower-effective plantaitons was summarized.And were briefly introduced the difficulties in regeneration—poor soil power,low plantation production,lack of water and self-poison,and variety degeneration of Casuarina eq- uisetifolia etc.Ways of shelterbelt regeneration are mainly regenerations tender strip system,under group sys- tem anti under forest;The major measures of regeneration are species selection,utilization of superior strains, nutrient and water managements.Ways of lower-effective plantation transforantion are mainly complete transfor- mation,transformation under strip system,interplanting in alternative rows and planting after-culture.Trans- formation measures of lower-effective plantations are esteblishing of mixed forest,tending and intermediate cut- ting,applying with soil from other place,regulation and controling of strusture of shelterbelt更多还原