干旱区生态环境知识资源中心(Arid): Maximizing food equivalent unit yield for forage maize production without notably compromising dry matter yield and feed quality in a semi-arid region

Arid

DOI	10.1016/j.indcrop.2024.118942
	Maximizing food equivalent unit yield for forage maize production without notably compromising dry matter yield and feed quality in a semi-arid region
	Jiang, Congze; You, Yongliang; Lai, Xingfa; Zhang, Zhixin; Gao, Wei; Ma, Renshi; Yang, Xianlong
通讯作者	Yang, XL
来源期刊	INDUSTRIAL CROPS AND PRODUCTS
ISSN	0926-6690
EISSN	1872-633X
出版年	2024
卷号	218
英文摘要	Food equivalent unit (FEU) is a vector used to measure the value of food based on its calorie and protein content and their digestibility. However, the optimal planting density and N application rate for maximizing the FEU yield (FEUY) of forage maize (Zea mays L.) is still poorly understood in the fast-growing animal husbandry regions of the Chinese Loess Plateau. Here, a 2-year consecutive field experiment was conducted to explore the impacts of planting density, N application rate, and their interactions on growth, dry matter yield (DMY), forage quality, and FEUY of a dominant forage maize cultivar. Planting density significantly affected the stem diameter, LAI, DMY, and dry matter allocation (DMA) of the leaf. Initially, increasing the N rate increased the stem diameter, LAI, FEUY, and DMY of forage maize and then decreased. The stem diameter, LAI, FEUY and aboveground DMY peaked under 180 kg center dot ha- 1 N in both years. Moreover, N application significantly increased the crude protein content of the whole plant and decreased the acid detergent fiber content. The surface fittings of the 2-year study indicated that 110,000 plants center dot ha- 1 (plant density) and 171.2 kg center dot ha- 1 (N rate) obtained the greatest DMY (19.0 t center dot ha- 1). The grade index (a comprehensive evaluation index for forage quality) peaked at 15.4 MJ center dot d-1 under 94,000 plants ha-1 and 270 kg center dot ha- 1. The 110,000 plants center dot ha- 1 plant density and 181.5 kg center dot ha- 1 N rate jointly maximized the FEUY (11,125.4 FEU center dot ha- 1), maintaining 99.9 % of the maximum DMY and 97.5 % of the maximum grade index. Thus, 110,000 plants center dot ha- 1 plant density and 181.5 kg center dot ha- 1 N rate are recommended for high-productivity forage maize production, without notably compromising dry matter yield and feed quality. This research is conducive to advancing the coordinated development of forage crop cultivation and herbivorous livestock farming in semi-arid rainfed areas.
英文关键词	Planting density N application rate Dry matter yield Forage quality Food equivalent unit yield
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001252898600001
WOS关键词	NITROGEN USE EFFICIENCY ; PLANTING DENSITY ; GRAIN-YIELD ; DRYLAND AREAS ; DIETARY FIBER ; WATER-USE ; MANAGEMENT ; FERTILIZER ; CORN ; SECURITY
WOS类目	Agricultural Engineering ; 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/2XILL650/404174
推荐引用方式 GB/T 7714	Jiang, Congze,You, Yongliang,Lai, Xingfa,et al. Maximizing food equivalent unit yield for forage maize production without notably compromising dry matter yield and feed quality in a semi-arid region[J],2024,218.
APA	Jiang, Congze.,You, Yongliang.,Lai, Xingfa.,Zhang, Zhixin.,Gao, Wei.,...&Yang, Xianlong.(2024).Maximizing food equivalent unit yield for forage maize production without notably compromising dry matter yield and feed quality in a semi-arid region.INDUSTRIAL CROPS AND PRODUCTS,218.
MLA	Jiang, Congze,et al."Maximizing food equivalent unit yield for forage maize production without notably compromising dry matter yield and feed quality in a semi-arid region".INDUSTRIAL CROPS AND PRODUCTS 218(2024).