干旱区生态环境知识资源中心(Arid): Analysis and Closing of the High-Production-Maize Yield Gap in the Semi-Arid Area of Northeast China

Arid

DOI	10.3390/agronomy14010030
	Analysis and Closing of the High-Production-Maize Yield Gap in the Semi-Arid Area of Northeast China
	Wang, Meng; Zhang, Lei; Lin, Yuan; Zhao, Jiale; Qin, Yubo; Li, Qian; Liu, Hang; Sun, Bo; Wang, Lichun
通讯作者	Wang, LC
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2024
卷号	14 期号:1
英文摘要	A mulched drip fertigation system is an effective way to improve maize yield, but at present, the efficiency of nutrient delivery and water use are generally low. Therefore, this study conducted optimization field experiments to identify the main factors limiting the delivery of water and fertilizer, including regulations on nitrogen (N) fertilizer, irrigation conditions, planting density and maize varieties, in the semi-arid area of Northeast China. As part of an effort to close the yield gap for maize, an optimized system (DS) for optimal crop, nutrient and water management was designed to improve the agronomic and economic performance of maize farming in the area. The application rate of N fertilizer was 240 kg ha-1; the base fertilizer was applied four times (once at the jointing stage, twice at the belling stage and once at the silking stage); the rates of application of phosphorus (P) and potassium (K) fertilizer were 90 kg P2O5 ha-1 and 90 kg K2O ha-1, respectively; the irrigation amount was 270 mm ha-1; the maize variety Fumin 985 was planted at a density of 80,000 plants ha-1 in DS; the grain yield of DS reached 13.8 Mg ha-1, 93% of the yield potential. DS yielded an economic benefit of 18,449 yuan ha-1, which was significantly higher than the economic benefit of 13,818 yuan ha-1 achieved under farmers' practices (FP). Furthermore, the utilization rates of N, P, K, and water were significantly improved under DS. In conclusion, DS increased production potential, with high efficiency in nutrient delivery and water use and low losses of nutrients and water. The crop, fertilizer, and water management of DS provided a technological system to simultaneously improve crop production and resource-use efficiency in the semi-arid area of Northeast China.
英文关键词	high-production maize nutrient management yield gaps nitrogen fertilizer planting density
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001149060100001
WOS关键词	NITROGEN USE EFFICIENCY ; CORN
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402741
推荐引用方式 GB/T 7714	Wang, Meng,Zhang, Lei,Lin, Yuan,et al. Analysis and Closing of the High-Production-Maize Yield Gap in the Semi-Arid Area of Northeast China[J],2024,14(1).
APA	Wang, Meng.,Zhang, Lei.,Lin, Yuan.,Zhao, Jiale.,Qin, Yubo.,...&Wang, Lichun.(2024).Analysis and Closing of the High-Production-Maize Yield Gap in the Semi-Arid Area of Northeast China.AGRONOMY-BASEL,14(1).
MLA	Wang, Meng,et al."Analysis and Closing of the High-Production-Maize Yield Gap in the Semi-Arid Area of Northeast China".AGRONOMY-BASEL 14.1(2024).