缓释肥用量对薄壳山核桃容器苗生长及养分含量的影响

doi:10.3969/j.issn.1000-2006.201811040

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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

所属专题：薄壳山核桃专题

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^,^*()

1.江苏省林业科学研究院,江苏南京 210014
2.南京林业大学,南方现代林业协同创新中心,南京林业大学生物与环境学院, 江苏南京 210037

收稿日期:2018-11-25 修回日期:2019-06-07 出版日期:2019-10-08 发布日期:2019-10-08
通讯作者: 窦全琴,谢寅峰
基金资助:
国家林业局“948”项目(2015-4-01);中央财政林业科技推广示范资金项目(苏[2016]TG04号);江苏高校优势学科建设工程资助项目(PAPD)

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

PAN Pingping¹^,²(), DOU Quanqin¹^,^*(), TANG Wenhua², XIE Yinfeng²^,^*()

1. Jiangsu Academy of Forestry, Nanjing 210014,China
2. Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University,Nanjing 210037, China

Received:2018-11-25 Revised:2019-06-07 Online:2019-10-08 Published:2019-10-08
Contact: DOU Quanqin,XIE Yinfeng

摘要/Abstract

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。

关键词: 薄壳山核桃, 缓释肥, 容器苗, 矿质营养

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.

Key words: Carya illinoensis, slow release fertilizer, container seedling, mineral nutrition

中图分类号:

S718

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.

PAN Pingping, DOU Quanqin, TANG Wenhua, XIE Yinfeng. Effects of slow release fertilizer dosage on growth and nutrient contents of Carya illinoensis container seedlings[J].Journal of Nanjing Forestry University (Natural Science Edition), 2019, 43(5): 163-168.DOI: 10.3969/j.issn.1000-2006.201811040.

图/表 4

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处理 treatment	根/g root	茎/g stem	叶/g leaf	总生物量/g total biomass	根冠比 root to shoot ratio
T0	8.33±2.04 b	1.53±0.42 b	2.19±0.68 b	12.05±2.88 c	2.27±0.41 a
T1	41.91±4.60 a	17.61±3.64 a	17.58±0.80 a	77.09±7.55 a	1.20±0.16 b
T2	37.34±4.58 a	13.37±3.40 a	15.96±2.07 a	66.68±7.22 ab	1.32±0.31 b
T3	34.38±2.27 a	10.13±2.26 a	12.02±1.31 a	56.54±2.68 b	1.58±0.27 ab

处理 treatment	总长/cm total root length	总表面积/cm² total root surface area	总体积/cm³ total root volume	平均直径/mm mean root diameter
T0	1 296.29±308.10 b	337.04±25.77 b	7.44±2.87 b	0.87±0.27 c
T1	3 021.77±255.96 a	1 254.58±177.66 a	49.97±7.23 a	7.08±1.69 a
T2	2 899.92±495.42 a	1 095.33±30.13 a	45.13±4.54 a	5.08±0.97 ab
T3	2 762.88±172.97 a	994.00±100.18 a	35.32±4.56 a	3.71±0.57 b

缓释肥用量对薄壳山核桃容器苗生长及养分含量的影响

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

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