摘要
容器苗作为主要的造林材料广泛用于林地更新和荒山的植被恢复,但其造林成活率及生长表现常受杂草和土壤肥力的影响。指数施肥作为一种新型的容器苗培育方式,将施肥量与植物指数生长期间的需肥量紧密结合,并通过营养载荷在幼苗体内建立营养库,从而降低了幼苗对种植地营养水平的依赖,有利于提高幼苗的造林成活率。文中介绍了指数施肥的原理,及其对苗期和种植后幼苗生长的影响,旨在为容器苗指数施肥在我国的推广提供理论基础。
Container seedlings were widely used to forest regeneration and vegetation restoration of bare mountain,and however,the survival rate and growth of outplanting seedlings were influenced by weeds and soil fertility.As a new culture method of container seedling,exponential fertilization takes an integrative account of the fertilizer applied and fertilizer needed during the exponential growth period of seedlings,and builds a nutrient reserve within seedlings via nutrient loading.In this way,seedlings will be less dependent on the nutritional level of the site on which they are growing and the survival rate will be improved,This paper introduced the principle of exponential fertilization,and its effect on the growth of seedlings in nursery and outplanting,in order to provide a theoretic basis for extending the use of exponential fertilization in China.
出处
《世界林业研究》
CSCD
北大核心
2010年第2期22-27,共6页
World Forestry Research
基金
国家“十一五”科技支撑专题相思速生丰产林培育关键技术研究与示范(2006BAD24B0202)
关键词
指数施肥
营养载荷
营养库
植被恢复
容器苗
exponential fertilization
nutrient loading
nutrient reserve
vegetation restoration
