[1]李鑫,李晓菁,史锋厚*,等. 缓释肥施用量对紫楠容器苗生长的影响[J].西北林学院学报,2022,37(4):152-157.[doi:10.3969/j.issn.1001-7461.2022.04.20]
　LI Xin,LI Xiao-jing,SHI Feng-hou*,et al. Effects of Slow-Release Fertilizer Amount on the Growth of Container Seedlings of Phoebe sheareri[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2022,37(4):152-157.[doi:10.3969/j.issn.1001-7461.2022.04.20]
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 缓释肥施用量对紫楠容器苗生长的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第37卷
期数:
2022年第4期
页码:
152-157
栏目:
出版日期:
2022-07-31

文章信息/Info

Title:
 Effects of Slow-Release Fertilizer Amount on the Growth of Container Seedlings of Phoebe sheareri
文章编号:
1001-7461(2022)04-0152-06
作者:
 李鑫1; 2; 李晓菁1; 史锋厚1*; 沈永宝1
 （1.南京林业大学 林学院/南方现代林业协同创新中心，江苏 南京 210037；2.扬州苏瑞园林绿化工程有限公司，江苏 扬州 225000）
Author(s):
 LI Xin1; 2; LI Xiao-jing1; SHI Feng-hou1*; SHEN Yong-bao1
 (1.College of Forestry Nanjing Forestry University/Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing 210037,Jiangsu,China; 2.Yangzhou Surui Landscaping Engineering Co.,Ltd.,Yangzhou 225000,Jiangsu,China)
关键词:
 ; 紫楠; 缓释肥; 容器苗; 生长指标; 根系形态; 生理指标
Keywords:
Phoebe sheareri;  slow-release fertilizer;  container seedling;  growth index;  root morphology;  physiological index
分类号:
S725.5
DOI:
10.3969/j.issn.1001-7461.2022.04.20
文献标志码:
A
摘要:
 以紫楠芽苗为试验材料,研究不同缓释肥施用量对紫楠容器苗生长指标和生理指标以及根系形态指标的影响,以筛选最佳缓释肥施用量，为紫楠容器育苗过程中精准施肥提供技术支撑。试验采用单因素随机区组设计,设置4个不同的缓释肥施用量处理：F1 2.0 kg·m-3、F2 2.5 kg·m-3、F3 3.0 kg·m-3、F4 3.5 kg·m-3，测定不同缓释肥施用量水平下的紫楠苗木生长指标、根系指标和生理指标。结果表明，不同缓释肥施用量对紫楠容器苗的形态生长指标、根系指标和生理指标存在显著影响。紫楠苗木各项测定指标基本随育苗基质中缓释肥施用量的增加而呈现先增高后降低的变化趋势。缓释肥施用量为F3水平时，紫楠容器苗的长势最佳，苗高13.63 cm、地径5.03 mm，苗木单株干质量3.92 g·株-1、侧根干质量1.16 g·株-1，苗木根系总长204.28 cm、根系表面积157.51 cm2、根系体积12.46 cm3、总根尖数597个、一级侧根15.53条；同时，苗木叶片中叶绿素和营养物质含量均达到最大值。当缓释肥施用量增至F4水平时，苗木各项生长指标和生理指标均出现下降的趋势，说明育苗基质中的养分浓度过高，对苗木生长和根系发育产生抑制作用，影响根系吸收营养物质。综合评价，可选用3.0 kg·m-3缓释肥作为1年生紫楠容器苗培育过程中的推荐施肥量。
Abstract:
 Container seedlings of Phoebe sheareri were used as materials to study the effects of different amounts of slow-release fertilizer (SRF) on the indices of growth,physiology,and morphology of the seedlings to select the optimal amount for the application of SRF to provide technical support for precision fertilization of the seedlings.By conducting single-factor randomized block design,the amounts of SRF were set with four levels:F1:2.0,F2:2.5,F3:3.0,and F4:3.5 kg·m-3,respectively.The results showed that the different levels of SRF had significant effects on the morphological and physiological indices of P.sheareri container seedlings.And all the indices showed a trend of increasing first and then decreasing with the increase of SRF amount.The container seedlings grew best under F3 treatment with the seedling height of 13.63 cm,the diameter 5.03 mm,the dry weight of the whole plant 3.92 g·plant-1,the dry weight of lateral roots 1.16 g·plant-1 the total length of roots 204.28 cm,the root surface area 157.51 cm2,the root volume 12.46 cm3,the number of total root tips 597,and the number of first-order lateral roots 15.53.And the contents of chlorophyll and nutrient reached the maximum.Under F4 treatment in which the SRF amount increased compared with F3 treatment,all the morphological and physiological indexes showed downward trends,indicating that the nutrient concentration was too high,which would affect the root absorption and inhibit the growth of seedlings.Therefore,F3 treatment with the application of SRF 3.0 kg·m-3 was recommended for the cultivation of one-year-old P.sheareri container seedlings.

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备注/Memo

备注/Memo:
 收稿日期：2021-06-19修回日期：2022-04-17
基金项目：江苏省农业科技自主创新资金项目(CX(19)3123)；江苏省林业科技创新与推广项目（LYKJ［2021］03）；江苏高校优势学科建设工程资助项目(PAPD)。
第一作者：李鑫。研究方向:林木种苗学。E-mail：760007301@qq.com
*通信作者：史锋厚，博士，高级实验师，硕士生导师。E-mail：280918109@qq.com
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