干旱区生态环境知识资源中心(Arid): Organic substitution regime with optimized irrigation improves potato water and nitrogen use efficiency by regulating soil chemical properties rather than microflora structure

Arid

DOI	10.1016/j.fcr.2024.109512
	Organic substitution regime with optimized irrigation improves potato water and nitrogen use efficiency by regulating soil chemical properties rather than microflora structure
	Wang, Xiya; Yang, Binggeng; Jiang, Lingling; Zhao, Shicheng; Liu, Mengjiao; Xu, Xinpeng; Jiang, Rong; Zhang, Jun; Duan, Yu; He, Ping; Zhou, Wei
通讯作者	He, P ; Zhou, W
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2024
卷号	316
英文摘要	Context or problem: Improving water and fertilizer use efficiency is an inevitable choice for sustainable potato production in North China. However, the regulation mechanism of potato water and nitrogen use efficiency under water-nitrogen coupling (W-N) regime is still unknown. Objective or research question: The objectives from a 3-year field experiment were (1) to assess the impact of W-N regimes on potato yield and water and nitrogen use efficiency, (2) to elucidate the soil microflora structure under W-N regimes, and (3) to determine the relationship between soil chemical properties, microflora structure, and potato water and nitrogen use efficiency. Methods: A three-year two-factor split-zone potato field experiment was conducted in arid and semi-arid regions of the Inner Mongolian Plateau, with irrigation [(rainfed (W0), optimized (soil-based) irrigation (W1), conventional irrigation (W2)] as the primary treatment and N fertilizer [no N (N0), chemical N (N1), 25 % manure substitution (N2)] as the secondary treatment. Results: Potato yield and water productivity followed N2 > N1 > N0, and partial nitrogen productivity and nitrogen agronomic efficiency followed N2 > N1 at the same irrigation level. Potato yield, nitrogen internal efficiency, partial nitrogen productivity and nitrogen agronomic efficiency first increased and then decreased, whereas water productivity gradually decreased with increasing irrigation levels under the same fertilization regime. Moreover, potato yield, soil total nitrogen, organic carbon, and microbial biomass carbon and nitrogen content peaked with the W1N2 regime. W-N regimes significantly influenced soil microbial community structure. Soil microbial alpha-diversity was less variable under W1 and N2 conditions. Soil bacterial network complexity and robustness were higher in W1 and W2 than in W0 regimes, whereas the opposite was true for fungi. The complexity and robustness of the soil bacterial and fungal network demonstrated for three fertilization regimes were higher in N1 and N2 than in N0 regimes. Neutral community model showed that soil microflora in W-N regime was mainly influenced by stochastic processes. PLSPM showed that organic substitution regime with optimized irrigation improves potato water and nitrogen use efficiency by regulating soil chemical properties rather than microflora structure. Conclusions: W1N2 regime synergizes well to improve potato water and N use efficiency and soil microflora stability, and organic substitution regime with optimized irrigation improves potato water and nitrogen use efficiency by regulating soil chemical properties.
英文关键词	Water-nitrogen coupling Water use efficiency Nitrogen use efficiency Soil chemical properties Soil microflora structure
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001280732600001
WOS关键词	MICROBIAL DIVERSITY ; MANURE APPLICATION ; FERTILIZER ; MANAGEMENT ; RESPONSES ; SYSTEM ; YIELD
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403735
推荐引用方式 GB/T 7714	Wang, Xiya,Yang, Binggeng,Jiang, Lingling,et al. Organic substitution regime with optimized irrigation improves potato water and nitrogen use efficiency by regulating soil chemical properties rather than microflora structure[J],2024,316.
APA	Wang, Xiya.,Yang, Binggeng.,Jiang, Lingling.,Zhao, Shicheng.,Liu, Mengjiao.,...&Zhou, Wei.(2024).Organic substitution regime with optimized irrigation improves potato water and nitrogen use efficiency by regulating soil chemical properties rather than microflora structure.FIELD CROPS RESEARCH,316.
MLA	Wang, Xiya,et al."Organic substitution regime with optimized irrigation improves potato water and nitrogen use efficiency by regulating soil chemical properties rather than microflora structure".FIELD CROPS RESEARCH 316(2024).