缓释肥用量对薄壳山核桃容器苗生长及养分含量的影响

潘平平; 窦全琴; 汤文华; 谢寅峰

doi:10.3969/j.issn.1000-2006.201811040

潘平平, 窦全琴, 汤文华, 谢寅峰

南京林业大学学报（自然科学版） ›› 2019, Vol. 43 ›› Issue (5) : 163-168.

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南京林业大学学报（自然科学版） ›› 2019, Vol. 43 ›› Issue (5) : 163-168. DOI: 10.3969/j.issn.1000-2006.201811040

专题报道

缓释肥用量对薄壳山核桃容器苗生长及养分含量的影响

潘平平 ¹^,² ,
窦全琴 ¹^,^* ,
汤文华 ² ,
谢寅峰 ²^,^*

作者信息 +

Effects of slow release fertilizer dosage on growth and nutrient contents of Carya illinoensis container seedlings

PAN Pingping ¹^,² ,
DOU Quanqin ¹^,^* ,
TANG Wenhua ² ,
XIE Yinfeng ²^,^*

Author information +

文章历史 +

摘要

【目的】探究缓释肥用量对薄壳山核桃容器苗生长和养分状况的影响,确定培育薄壳山核桃容器苗合理的缓释肥用量。【方法】采用单因素完全随机区组设计,设置不同处理T0、T1、T2、T3(缓释肥用量对应为0、3、6、9 kg/m³),测定和比较薄壳山核桃苗木生长及植株N、P、K养分含量。【结果】与对照(T0)相比,不同缓释肥处理均显著促进薄壳山核桃苗木苗高、地径、单株生物量、根系总长、根系总表面积、根系总体积、根系平均直径和各器官N、P、K含量,改善了根冠比且以T1处理效果最佳;随着处理浓度增加,促进效应下降。动态测定表明,缓释肥处理能保持试验期苗高与地径的持续快速生长,其中地径的持续时间更长,生长后期(8月中旬后)与苗高呈现非同步性。【结论】适量的缓释肥用量能促进薄壳山核桃容器苗的生长、生物量积累和根系发育,促进效应与改善植株N、P、K养分含量有关;缓释肥施用量以3 kg/m³较佳。

Abstract

【Objective】 The objective of the present study was to explore the effects of slow-release fertilizer dosage on the growth and nutrient contents of pecan (Carya illinoensis) container seedlings and to determine a reasonable slow-release fertilizer dosage for cultivating these seedlings. 【Method】 A single-factor, completely randomized block design was used to set up the treatments T0, T1, T2 and T3 (0, 3, 6 and 9 kg/m³, respectively) with different slow-release fertilizer dosages, and the growth of seedlings and nutrient content [nitrogen (N), phosphorus (P) and potassium (K)] were determined and compared. 【Result】 Compared with the control treatment (T0), the different slow-release fertilizer treatments significantly promoted seedling height, root collar diameter, biomass per plant, total root length, total root surface area, total root volume, root diameter, and N, P, and K levels in all organ. The nutrient content improved the root-to-shoot ratio, and the treatment effect was found to be optimum with T1. As the fertilizer concentration increased, the promoting effect decreased. Dynamic measurement showed that the slow-release fertilizer treatment maintained rapid increase in seedling height and root collar diameter during the treatment period; the root collar diameter lasted longer than other factors, and the growth stage (after mid-August) and seedling height were non-synchronous. 【Conclusion】 An appropriate slow-release fertilizer dosage can promote growth, biomass accumulation, and root development in pecan container seedlings. The promoting effect was related to increased nutrient content, and the optimum fertilizer dosage was 3 kg/m³.

导出引用

潘平平, 窦全琴, 汤文华, 等. 缓释肥用量对薄壳山核桃容器苗生长及养分含量的影响[J]. 南京林业大学学报（自然科学版）. 2019, 43(5): 163-168 https://doi.org/10.3969/j.issn.1000-2006.201811040

PAN Pingping, DOU Quanqin, TANG Wenhua, et al. Effects of slow release fertilizer dosage on growth and nutrient contents of Carya illinoensis container seedlings[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2019, 43(5): 163-168 https://doi.org/10.3969/j.issn.1000-2006.201811040

中图分类号： S718

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