[1]张广涛,包厚天,黄卫和,等. 不同施氮处理对乌桕容器苗养分状况的影响[J].西北林学院学报,2023,38(1):80-87.[doi:10.3969/j.issn.1001-7461.2023.01.11]
　ZHANG Guang-tao,BAO Hou-tian,HUANG Wei-he,et al. Effects of Different Nitrogen Application Treatments on Nutrient Status of Sapium sebiferum Container Seedlings[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(1):80-87.[doi:10.3969/j.issn.1001-7461.2023.01.11]
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 不同施氮处理对乌桕容器苗养分状况的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第1期
页码:
80-87
栏目:
出版日期:
2023-01-31

文章信息/Info

Title:
 Effects of Different Nitrogen Application Treatments on Nutrient Status of Sapium sebiferum Container Seedlings
文章编号:
1001-7461(2023)01-0080-08
作者:
 张广涛1; 包厚天1; 黄卫和2; 彭辉武2; 喻方圆1*
 （1.南方现代林业协同创新中心，南京林业大学 林学院，江苏 南京 210037；2.江西省萍乡市林业科学研究所，江西 萍乡 337000）
Author(s):
 ZHANG Guang-tao1; BAO Hou-tian1; HUANG Wei-he2; PENG Hui-wu2; YU Fang-yuan1*
 (1.Co-Innovation Center for Sustainable Forestry in Southern China,College of Forestry,Nanjing Forestry University,Nanjing 210037,Jiangsu,China; 2.Pingxiang Institute of Forestry,Pingxiang 337000,Jiangxi,China)
关键词:
 ; 乌桕; 指数施肥; 营养元素积累; 非结构性碳水化合物含量
Keywords:
Sapium sebiferum;  exponential fertilization;  nutrient element accumulation;  non-structure carbohydrate content
分类号:
S792.99
DOI:
10.3969/j.issn.1001-7461.2023.01.11
文献标志码:
A
摘要:
 研究不同施N处理对乌桕容器苗营养元素和非结构性碳水化合物的影响，筛选出培育乌桕容器苗的最佳施肥方法和施氮量。以当年生乌桕容器苗为试验材料，设置传统施肥（C600）、指数施肥（Z200、Z400、Z600、Z800、Z1000）和不施肥（CK）共7个处理，分别测定不同N素施肥处理对乌桕容器苗N、P、K等营养元素浓度（质量分数，下同）、积累量和可溶性糖等非结构性碳水化合物含量的影响。结果表明，各施N处理对乌桕容器苗养分状况均有显著影响。随施N量的增加，乌桕容器苗各器官的N浓度都是先增后减，最大值出现在指数施肥Z600处，根、茎、叶的N浓度分别为101.80、91.50 mg·g-1和121.33 mg·g-1。乌桕容器苗各器官P浓度都较对照有所降低。指数施肥条件下，根和茎中的K浓度随施N量的增加逐渐降低，叶中的K浓度随施N量增加呈现先增后减趋势，在Z600处达到最大;乌桕容器苗地上部分、地下部分和全株的营养元素积累量都随施N量的增加出现先增后减趋势，最大值都出现在Z600处；在指数施肥的各处理中，乌桕容器苗根、茎、叶各器官中的可溶性糖含量随施N量增加均呈现先增后减趋势，在指数施肥Z600处达到最大，分别为63.73、55.55 mg·g-1和134.70 mg·g-1，指数施肥促进乌桕容器苗可溶性糖含量积累的作用要优于传统施肥；除C600和Z200外，其他各施肥处理组根淀粉含量均较对照有下降趋势，且在指数施肥条件下根淀粉含量随施N量的增加而减少。在茎和叶中，各施肥处理组和对照组淀粉含量无明显差异。指数施肥优于传统施肥，Z600处理下的乌桕容器苗的营养元素浓度、积累量和非结构性碳水化合物含量最高，为乌桕容器苗最佳施肥处理。
Abstract:
 The study aimed at determining the effects of different nitrogen applications on the nutrient elements and non-structure carbohydrate accumulation of Sapium sebiferum container seedlings,further exploring the most proper method of nitrogen application.The current year S.sebiferum container seedlings were used as experimental materials.Seven nitrogen-application treatments including traditional fertilization (C600),exponential fertilization (Z200,Z400,Z600,Z800,Z1000) and no fertilization (control) were set up.The parameters including the concentration and accumulation of nutrient elements (nitrogen,phosphorus and potassium) and the non-structural carbohydrate content (soluble sugar and starch) in different organs were measured.All nitrogen application treatments significantly affected the nutrient status of S.sebiferum container seedlings.With the increase of nitrogen application,the nitrogen concentration in all organs first increased and then decreased,and the maximum values appeared at the exponential fertilization of Z600.The nitrogen concentrations in roots,stems and leaves were 101.80,91.50,and 121.33 mg·g-1,respectively.Nonetheless,the phosphorus concentrations in all organs were lower than that of the control.Under the condition of exponential fertilization,the potassium concentrations in roots and stems decreased gradually with the increase of nitrogen application,while the potassium concentration in the leaves had the uptrend first and the downtrend latter with the peak value in treatment Z600.The nutrient element accumulations of aboveground part,underground part and whole plant also appeared the highest values in Z600.As the nitrogen application amount increased,the soluble sugar content in roots,stems and leaves went up first and declined subsequently under exponential fertilization,reaching the maximum value in Z600,which were 63.73,55.55 and 134.70 mg·g-1,respectively.The promoting effect of exponential fertilization on the soluble sugar accumulation was more effective than that of traditional fertilization.Except for C600 and Z200,the starch contents in roots of other fertilization treatments decreased compared with the control,and the root starch content was negatively related to the nitrogen application under the exponential fertilization.In stems and leaves,there was no significant difference in starch content between each fertilization treatment and the control.Exponential fertilization was superior to traditional one.The nutrient element concentration,amount of element accumulation and non-structural carbohydrate content were the highest in the treatment Z600,which was proved to be the optimal treatment for S.sebiferum container seedlings.

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备注/Memo

备注/Memo:
 收稿日期：2021-11-07修回日期：2022-01-19
基金项目：江苏省林业科技创新与推广项目（LYKJ［2021］30）；江苏高校优势学科建设工程项目（PAPD）。
第一作者：张广涛。研究方向：林木种苗。E-mail:780875198@qq.com
*通信作者：喻方圆，教授。研究方向：林木种苗。E-mail:fyyu@njfu.com.cn
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