干旱区生态环境知识资源中心(Arid): Optimized Nitrogen Rate, Plant Density, and Regulated Irrigation Improved Grain, Biomass Yields, and Water Use Efficiency of Maize at the Oasis Irrigation Region of China

Arid

DOI	10.3390/agriculture12020234
	Optimized Nitrogen Rate, Plant Density, and Regulated Irrigation Improved Grain, Biomass Yields, and Water Use Efficiency of Maize at the Oasis Irrigation Region of China
	Asibi, Aziiba Emmanuel; Hu, Falong; Fan, Zhilong; Chai, Qiang
通讯作者	Chai, Q
来源期刊	AGRICULTURE-BASEL
EISSN	2077-0472
出版年	2022
卷号	12 期号:2
英文摘要	Nitrogen is a key factor in maize (Zea mays L.) grain and biomass production. Inappropriate application with sub-optimum plant density and irrigation can lead to low productivity and inefficient use. A two-year field experiment was conducted to determine which nitrogen rate, plant density, and irrigation level optimize grain, biomass yield, and water use efficiency. Three nitrogen rates of urea (46-0-0 of N-P2O5-K2O) (N0 = 0 kg N ha(-1), N1 = 270 kg N ha(-1), and N2 = 360 kg N ha(-1)), with three maize densities (D1 = 75,000 plants ha(-1), D2 = 97,500 plants ha(-1), and D3 = 120,000 plants ha(-1)), and two irrigation levels (W1 = 5250 m(3)/hm(2) and W2 = 4740 m(3)/hm(2)) were investigated. The results show that both grain and biomass yields were affected by the main factors. The interaction between nitrogen rate and irrigation level significantly (p < 0.001) affected grain yield but not biomass. It was observed that the grain yield increased correspondingly with nitrogen rate and plant density, while it decreased as the irrigation level increased. Water use efficiency was significantly (p < 0.001) affected by the main factors and their interactions. Nevertheless, water use efficiency was highest at (5250 m(3)/hm(2)) x 270 kg N ha(-1); x 360 kg N ha(-1) x 120,000 plants ha(-1) and increased from 62% to 68%. In addition, the highest biomass yield was recorded at 5250 m(3)/hm(2) x 270 kg N ha(-1); x 360 kg N ha(-1) x 120,000 plants ha(-1) while the interaction of either irrigation level with 0 and 270 kg ha(-1) or 97,500 and 120,000 plants ha(-1) yielded the lowest water use efficiency. Thus, optimized nitrogen rates, plant density, and alternate irrigation levels can support optimum grain and biomass yields. It can also improve nitrogen and water use efficiency in maize production.
英文关键词	food security deficit irrigation sustainable cropping Zea mays L nitrogen use
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:000763243300001
WOS关键词	WINTER-WHEAT ; CORN YIELD ; COTTON ; STRATEGIES ; GROWTH ; PLAIN
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/2XILL650/391669
推荐引用方式 GB/T 7714	Asibi, Aziiba Emmanuel,Hu, Falong,Fan, Zhilong,et al. Optimized Nitrogen Rate, Plant Density, and Regulated Irrigation Improved Grain, Biomass Yields, and Water Use Efficiency of Maize at the Oasis Irrigation Region of China[J],2022,12(2).
APA	Asibi, Aziiba Emmanuel,Hu, Falong,Fan, Zhilong,&Chai, Qiang.(2022).Optimized Nitrogen Rate, Plant Density, and Regulated Irrigation Improved Grain, Biomass Yields, and Water Use Efficiency of Maize at the Oasis Irrigation Region of China.AGRICULTURE-BASEL,12(2).
MLA	Asibi, Aziiba Emmanuel,et al."Optimized Nitrogen Rate, Plant Density, and Regulated Irrigation Improved Grain, Biomass Yields, and Water Use Efficiency of Maize at the Oasis Irrigation Region of China".AGRICULTURE-BASEL 12.2(2022).