南京林业大学学报（自然科学版）2019，Vol.43Issue(1)：69-75,7.DOI:10.3969/j.issn.1000-2006.201801025
缓释肥施用量对槲栎容器苗苗木质量的影响
Effects of slow-release fertilizer rate on the quality of Quercus aliena container seedlings
摘要
Abstract
[Objective]Determine the effects of slow-release fertilizer on seedling growth, nutrient accumulation, and non-structural carbohydrate (NSC) of Quercus aliena container seedlings.[Method]Experiments were conducted using five different rates (0.24, 0.95, 1.91, 3.81 and 5.71 g/L) of slow-release fertilizer (15％N+9％P2O5+12％K2O+2％MgO+trace element) per liter media with a completely random design.At the end of the first growing season, the seedling height, diameter, biomass, as well as content and concentration of nutrients and NSC of Q.aliena were determined.[Results]Height, plant biomass, plant nitrogen content, starch content, and soluble sugar content were higher with0.95, 1.91, and 3.81 g of slow-release fertilizer per liter media than those with 0.24 g per liter media.When the rate increased to 5.71 g per liter media, no beneficial effects on height were observed.In contrast, lower plant starch content and soluble sugar content were observed at a rate of 5.71 g per liter media.[Conclusion]The recommended fertilization rate was 0.95-3.81 g per liter media of slow-release fertilizer for Q.aliena container seedlings, which is equivalent to100-400 mg N per seedling.Tissue nutrient concentration was used by foresters to gauge nutritional status as follows:in root, N 1.63％-1.93％;P 0.48％-0.52％;K 0.65％-0.79％;in stem, N 1.11％-1.43％;P 0.24％-0.25％;K0.28％-0.44％.From the fertilizer use efficiency, cost and environment protection perspective, the fertilization rate was determined as 0.95 g slow-release fertilizer per liter media (100 mg N per seedling).Soluble sugar and starch content are important indices to optimize nursery fertilization.关键词
槲栎/容器苗/缓释肥/养分/非结构性碳水化合物Key words
Quercus aliena Bl./container seedling/slow-release fertilizer/nutrients/non-structural carbohydrate (NSC)分类
农业科技引用本文复制引用
姚光刚,李国雷,郑永林,薛敦孟,李世安,袁启华..缓释肥施用量对槲栎容器苗苗木质量的影响[J].南京林业大学学报（自然科学版）,2019,43(1):69-75,7.基金项目
国家自然科学基金项目(31670638) （31670638）
