干旱区生态环境知识资源中心(Arid): Effects of Irrigation and Nitrogen Fertilization on Seed Yield, Yield Components, and Water Use Efficiency of Cleistogenes songorica

Arid

DOI	10.3390/agronomy11030466
	Effects of Irrigation and Nitrogen Fertilization on Seed Yield, Yield Components, and Water Use Efficiency of Cleistogenes songorica
	Tao, Qibo; Bai, Mengjie; Jia, Cunzhi; Han, Yunhua; Wang, Yanrong
通讯作者	Wang, YR (corresponding author), Lanzhou Univ, Key Lab Grassland Livestock Ind Innovat, State Key Lab Grassland Agroecosyst, Coll Pastoral Agr Sci & Technol,Minist Agr & Rura, Lanzhou 730020, Peoples R China.
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2021
卷号	11 期号:3
英文摘要	Irrigation and nitrogen (N) are two crucial factors affecting perennial grass seed production. To investigate the effects of irrigation and N rate on seed yield (SY), yield components, and water use efficiency (WUE) of Cleistogenes songorica (Roshevitz) Ohwi, an ecologically significant perennial grass, a four-year (2016-2019) field trial was conducted in an arid region of northwestern China. Two irrigation regimes (I1 treatment: irrigation at tillering stage; I2 treatment: irrigation at tillering, spikelet initiation, and early flowering stages) and four N rates (0, 60, 120, 180 kg ha(-1)) were arranged. Increasing amounts of both irrigation and N improved SY, evapotranspiration, WUE, and related yield components like fertile tillers m(-2) (FTSM) and seeds spikelet(-1). Meanwhile, no significant difference was observed between 120 and 180 kg N ha(-1) treatments for most variables. The highest SY and WUE was obtained with treatment combination of I2 plus 120 kg N ha(-1) with four-year average values of 507.3 kg ha(-1) and 1.8 kg ha(-1) mm(-1), respectively. Path coefficient and contribution analysis indicated that FTSM was the most important yield component for SY, with direct path coefficient and contribution coefficient of 0.626 and 0.592. Overall, we recommend I2 treatment (three irrigations) together with 120 kg N ha(-1) to both increase SY and WUE, especially in arid regions. Future agronomic managements and breeding programs for seed should mainly focus on FTSM. This study will enable grass seed producers, plant breeders, and government program directors to more effectively target higher SY of C. songorica.
英文关键词	Cleistogenes songorica irrigation nitrogen application rate path coefficient analysis seed yield seed yield components water use efficiency
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:000633217700001
WOS关键词	WINTER OILSEED RAPE ; TALL FESCUE ; LEYMUS-CHINENSIS ; PLANTING DENSITY ; PRODUCTIVITY ; GROWTH ; L. ; MANAGEMENT ; CULTIVARS ; RESPONSES
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349388
作者单位	[Tao, Qibo; Bai, Mengjie; Jia, Cunzhi; Han, Yunhua; Wang, Yanrong] Lanzhou Univ, Key Lab Grassland Livestock Ind Innovat, State Key Lab Grassland Agroecosyst, Coll Pastoral Agr Sci & Technol,Minist Agr & Rura, Lanzhou 730020, Peoples R China; [Tao, Qibo] Qingdao Agr Univ, Coll Grassland Sci, Grassland Agrihusb Res Ctr, Qingdao 266109, Peoples R China
推荐引用方式 GB/T 7714	Tao, Qibo,Bai, Mengjie,Jia, Cunzhi,et al. Effects of Irrigation and Nitrogen Fertilization on Seed Yield, Yield Components, and Water Use Efficiency of Cleistogenes songorica[J]. 兰州大学,2021,11(3).
APA	Tao, Qibo,Bai, Mengjie,Jia, Cunzhi,Han, Yunhua,&Wang, Yanrong.(2021).Effects of Irrigation and Nitrogen Fertilization on Seed Yield, Yield Components, and Water Use Efficiency of Cleistogenes songorica.AGRONOMY-BASEL,11(3).
MLA	Tao, Qibo,et al."Effects of Irrigation and Nitrogen Fertilization on Seed Yield, Yield Components, and Water Use Efficiency of Cleistogenes songorica".AGRONOMY-BASEL 11.3(2021).