[1]段世宇.施氮对毛白杨生长及养分含量的影响[J].江苏林业科技,2019,46(04):9-12.[doi:10.3969/j.issn.1001-7380.2019.04.002]
 Duan Shiyu.Effects of different nitrogen application rates on the growth and nutrient content of Populus tomentosa Carrière[J].Journal of Jiangsu Forestry Science &Technology,2019,46(04):9-12.[doi:10.3969/j.issn.1001-7380.2019.04.002]
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施氮对毛白杨生长及养分含量的影响()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第46卷
期数:
2019年04期
页码:
9-12
栏目:
试验研究
出版日期:
2019-08-31

文章信息/Info

Title:
Effects of different nitrogen application rates on the growth and nutrient content of Populus tomentosa Carrière
文章编号:
1001-7380(2019)04-0009-04
作者:
段世宇
山西省桑干河杨树丰产林实验局金沙滩林场
Author(s):
Duan Shiyu
Jinshatan Forest Farm of Shanxi Sanggan River Poplar High Yield Forest Experimental Bureau, Huairen 038300, China
关键词:
氮肥毛白杨枝条生长养分含量
Keywords:
Nitrogen fertilizer Populus tomentosa CarrièreBranch growthNutrient content
分类号:
Q945.15;S723.7;S792.117
DOI:
10.3969/j.issn.1001-7380.2019.04.002
文献标志码:
A
摘要:
试验研究了不同施氮量对毛白杨枝条生长及叶片内氮、磷、钾养分含量变化,以期为其育苗中科学合理施用氮肥提供理论依据。试验在田间条件下,设置4个处理,氮肥施用量分别为0(对照,N1)、8 g/株(N2)、16 g/株(N3)、24 g/株(N4),3次重复。结果表明:N3处理枝条长度分别比N1,N2提高了17.42%和7.68%,N3与N4之间无显著差异;5—9月,N3叶片内氮含量分别比N2提高了5.25%,11.74%,4.80%,7.81%,9.49%,N2显著高于对照;5,6,8月,N3磷含量分别比对照提高了17.87%,20.77%,31.36%,N2,N3,N4之间无显著差异;8月,N2,N3,N4钾含量分别比对照提高了15.62%,19.51%,20.24%,不同施氮量不会对毛白杨叶片内钾含量产生显著影响。综合分析认为,毛白杨育苗中适宜氮肥施用量为16 g/株。
Abstract:
The effects of different nitrogen application rates on the growth of Populus tomentosa Carrière branches and the contents of nitrogen, phosphorus and potassium in leaves were studied in order to provide theoretical basis for the scientific and rational application of nitrogen fertilizer in seedling raising. The experiment was conducted under field conditions, and set four treatment which nitrogen fertilizer application rates were 0 (control, N1), 8 g/plant (N2), 16 g/plant (N3), 24 g/plant (N4), repeat three times. The results show that: The branch length of N3 treatment increased by 17.42% and 7.68% compared with N1 and N2, there was no significant difference between N3 and N4; from May to September, the nitrogen content in leaves of N3 increased by 5.25%, 11.74%, 4.80%, 7.81% and 9.49% compared with N2, and N2 was significantly higher than that of the control; the phosphorus content of N3 increased by 17.87%, 20.77% and 31.36% compared with the control when in May, June and August, there was no significant difference between N2, N3 and N4; the potassium contents of N2, N3 and N4 increased by 15.62%, 19.51% and 20.24% compared with the control when in August, and different nitrogen application rates had no significant effect on the potassium content in the leaves of Populus tomentosa Carrière. Comprehensive analysis showed that the suitable amount of nitrogen fertilizer for Populus tomentosa Carrière seedlings was 16 g/plant.

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备注/Memo

备注/Memo:
收稿日期:2019-06-08;修回日期:2019-06-27
作者简介:段世宇(1984-),女,山西大同人,工程师,学士。研究方向:园林绿化与树木生理。
更新日期/Last Update: 2019-09-27