气候变化领域集成服务门户(CCPortal): Effects of various fertilization placements on the fate of urea-15N in moso bamboo forests

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DOI	10.1016/j.foreco.2019.117632
	Effects of various fertilization placements on the fate of urea-15N in moso bamboo forests
	Su W.; Fan S.; Zhao J.; Cai C.
发表日期	2019
ISSN	0378-1127
卷号	453
英文摘要	Appropriate fertilization practice is crucial to increase nitrogen (N) recovery efficiency and decrease N loss. Our aim is to determine the appropriate fertilization placement and the target age in moso bamboo forests. A field experiment was conducted to determine the effects of application methods (furrow and hole) and depths (0–20 and 20–40 cm) on the fate of urea-15N in moso bamboo forests. The 15N tracer technique was used to investigate the fates of the applied 15N fertilizer. The largest biomass was obtained from the bamboo culm (42.25–54.09%), but the maximum absorption and N content occurred in the leaves (28.86–39.31%). The N recovery efficiency of urea-15N was significantly higher for deep applications (30.62–31.14%) than for shallow applications (26.68–27.49%), whereas no significant difference was found between the furrow and hole applications. The residual 15N was mainly concentrated in the fertilized soil layer, and the residual 15N recovered from the 0–60 cm soil layer was 16.29–19.47%. The highest N recovery efficiency (31.34%) and lowest N loss (49.91%) were observed for the furrow application at 20–40 cm. In addition, the N competitive ability and N recovery efficiency of the I du (moso bamboo age, 1–2 years old) bamboo were 0.069 mg kg−1 d−1 and 13.29%, respectively, which were significantly higher than those of the other ages. Therefore, furrow application at depth of 20–40 cm is recommended for practical applications, and the I du bamboo should be the target of fertilization in moso bamboo forests. © 2019 Elsevier B.V.
英文关键词	15N-labeled urea; N loss; N recovery efficiency; Phyllostachys edulis; Residual N
语种	英语
scopus关键词	Efficiency; Forestry; Metabolism; Recovery; Soils; Urea; Application method; Competitive ability; Fertilized soils; N loss; N recoveries; Phyllostachys edulis; Recovery efficiency; Tracer technique; Bamboo; bamboo; competitive ability; fertilizer application; furrow irrigation; nitrogen; nutrient loss; tracer; urea; Bamboo; Efficiency; Forestry; Metabolism; Recovery; Urea; Phyllostachys pubescens
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155703
作者单位	International Centre for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan, Beijing, 100102, China; Zhejiang Academy of Forestry, Zhejiang Provincial Key Laboratory of Bamboo Research, Hangzhou, Zhejiang 310023, China
推荐引用方式 GB/T 7714	Su W.,Fan S.,Zhao J.,et al. Effects of various fertilization placements on the fate of urea-15N in moso bamboo forests[J],2019,453.
APA	Su W.,Fan S.,Zhao J.,&Cai C..(2019).Effects of various fertilization placements on the fate of urea-15N in moso bamboo forests.Forest Ecology and Management,453.
MLA	Su W.,et al."Effects of various fertilization placements on the fate of urea-15N in moso bamboo forests".Forest Ecology and Management 453(2019).