干旱区生态环境知识资源中心(Arid): An Optimized Nitrogen Application Rate and Basal Topdressing Ratio Improves Yield, Quality, and Water- and N-use Efficiencies for Forage Maize (Zea mays L.)

Arid

DOI	10.3390/agronomy13010181
	An Optimized Nitrogen Application Rate and Basal Topdressing Ratio Improves Yield, Quality, and Water- and N-use Efficiencies for Forage Maize (Zea mays L.)
	Ma, Renshi; Jiang, Congze; Shou, Na; Gao, Wei; Yang, Xianlong
通讯作者	Yang, XL
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2023
卷号	13 期号:1
英文摘要	Applying nitrogen (N) fertilizer at irrational rates and basal topdressing ratios typically leads to high resource wastage and serious environmental pollution and is a global problem. A pot experiment was conducted between 2020 and 2021 to investigate the effects of different N application rates and basal topdressing ratios on the growth, yield, quality, and water- and N- use efficiencies of forage maize. Four N treatments were used, with the following levels: 0 kg/ha (N-0), 70 kg/ha (N-70), 140 kg/ha (N-140), and 210 kg/ha (N-210); and two basal topdressing ratios of N fertilizer were tested, namely: 2:8 and 4:6. An increased N application rate, from 0 to 200 kg/ha, increased whole fresh and dry yields. N fertilization increased the crude protein (CP) content of different plant parts (stems, leaves, and ears), as well as at the whole plant level, but decreased neutral and acid detergent fiber content. The dry matter water use efficiency (WUEDM) increased, while the partial-factor productivity of applied N decreased with an increasing N application rate. Compared with N-0, the 2-year average dry matter yield under N-70, N-140, and N-210 increased by 21.8%, 27.6%, and 38.2%, respectively, while WUEDM increased by 19.1%, 28.7%, and 45.0%, respectively. At the 2:8 basal topdressing ratio, the dry matter yield, CP content, and N recovery efficiency under all N application rates were higher at harvest compared to the 4:6 ratio during normal rainfall years, while dry matter yield and WUEDM were both lower compared to the 4:6 ratio during dry years. In conclusion, during a normal rainfall year, a N application rate of 210 kg/ha, with a basal topdressing ratio of 2:8 between the sowing and jointing stages, is considered the optimal N fertilizer application strategy to improve forage maize production in the semi-arid areas of the Chinese Loess Plateau.
英文关键词	forage maize N application rate basal topdressing ratio yield and quality water- and N-use efficiencies
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:000914095300001
WOS关键词	RAIN-FED MAIZE ; PLANT-DENSITY ; SILAGE ; FERTILIZATION ; FERTIGATION ; COTTON
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/2XILL650/395176
推荐引用方式 GB/T 7714	Ma, Renshi,Jiang, Congze,Shou, Na,et al. An Optimized Nitrogen Application Rate and Basal Topdressing Ratio Improves Yield, Quality, and Water- and N-use Efficiencies for Forage Maize (Zea mays L.)[J],2023,13(1).
APA	Ma, Renshi,Jiang, Congze,Shou, Na,Gao, Wei,&Yang, Xianlong.(2023).An Optimized Nitrogen Application Rate and Basal Topdressing Ratio Improves Yield, Quality, and Water- and N-use Efficiencies for Forage Maize (Zea mays L.).AGRONOMY-BASEL,13(1).
MLA	Ma, Renshi,et al."An Optimized Nitrogen Application Rate and Basal Topdressing Ratio Improves Yield, Quality, and Water- and N-use Efficiencies for Forage Maize (Zea mays L.)".AGRONOMY-BASEL 13.1(2023).