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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 as the main reforestation materials are widely used in forest regeneration and vegetation restoration of barren hills, but their afforestation survival rate and growth performance are often affected by weeds and soil fertility. Exponential fertilization, as a new type of container seedling cultivation method, closely correlates the amount of fertilizer application with the amount of fertilizer needed during the growth of plant index, and establishes a nutrient pool in the seedling through nutrition load, thus reducing the dependence of the seedling on the nutrient level of the planting site. Help to improve seedling afforestation survival rate. In this paper, the principle of exponential fertilization and its effect on seedling growth after planting are introduced in order to provide theoretical basis for the promotion of container seedling index fertilization in China.