林木施肥与营养诊断

70年代以来,林木施肥与营养诊断,在恢复提高人工林林地肥力方面取得了很大进展,合理施肥已成为定向培育短轮伐期工业用材林重要技术措施。开展系统施肥网营养诊断研究是进行合理施肥、提高肥效的前提。土壤分析、植物组织分析与田间试验是主要营养诊断手段,由于诊断方法还存在一些技术问题,故在指导林地施肥方面尚受一定限制。本文对林木施肥研究历史、生产应用趋势和有关问题作了扼要评述。应用综合环境因子来研究营养诊断,开展系统定位试验,制定按树种的合理施肥方案。

FOREST FERTILIZATION AND NUTRIENT DIAGNOSIS

Since 70's, a great progress of forest fertilization and nutrient diagnosis has been made in restoring and raising forest soil fertility of plantation, and rational fertilization has become an important technical measure for directive cutivating short-rotation industrial timber plantation.The study on systematic fertilization network nutrient diagnosis is the prerequisite for national fertilization and raising the fertilizer efficiency. Soil analysis, plant tissue analysis and field trial are the major means to nutriant diagnosis. Because of some technical problems existed in nutriant diagnosis method, so it is somewhat limeted in guiding forest fertilization. This article makes a brief comment on the history of forest fertilization research, trend of its applications in forestry production, and some related problems.Integrated environmental factors should be applied to the study on nutrient diagnosis, carrying out systematic fixed location trials and working out rational fertilization schemes for various tree species.