干旱区生态环境知识资源中心(Arid): Evaluating quinoa stem lodging susceptibility by a mathematical model and the finite element method under different agronomic practices

Arid

DOI	10.1016/j.fcr.2021.108241
	Evaluating quinoa stem lodging susceptibility by a mathematical model and the finite element method under different agronomic practices
	Wang, Ning; Wang, Feng-Xin; Shock, Clinton C.; Meng, Chao-Biao; Huang, Ze-Jun; Gao, Lei; Zhao, Jian-Yu
通讯作者	Wang, FX (corresponding author), China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China.
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2021
卷号	271
英文摘要	Stem lodging, mainly caused by wind force, is a major constraint in quinoa production. Therefore, it is of great importance to reduce lodging susceptibility when developing attainable yield of quinoa under different agronomic and environmental conditions. A mathematical crop lodging model (GCLM) and a finite element model (FEM) via software ANSYS were applied to evaluate the quinoa lodging susceptibility with measured lodging percentages under field experiments in arid area of Northwest China in 2018 and 2019. The experimental treatments consisted of three factors: (1) irrigation threshold based on soil matric potential (SMP) (-15,-25, and -55 kPa), (2) nitrogen fertilizer rate (80, 160, and 240 kg ha(-1)), and (3) plant density (20, 30, and 40 plants m(-2)). Results showed that both the GCLM and FEM could be satisfactorily used to evaluate the quinoa lodging incidence. Increasing SMP and plant density would significantly (P < 0.05) decrease the critical wind speed (CWS, higher CWS means greater lodging resistance) mainly due to the great plant height and low stem strength, respectively. The effect of increasing plant height with greater nitrogen rates on CWS was counteracted by an increase in stem strength, resulting in the insignificant (P > 0.05) difference in CWS among nitrogen treatments. Quinoa height and stem strength were the two main factors that affected lodging susceptibility compared to spike mass and Young's modulus. The CWS of quinoa ranged from 3.5 m s(-1) to 4.5 m s(-1), and it would decrease by 1.8-2.3 m s(-1) for every 0.1 kg m(-2) increase of estimated yield. Therefore, the attainable yield needs to be maintained within a proper range in consideration of the local wind conditions to avoid dramatic yield loss caused by lodging.
英文关键词	Lodging model Wind force Critical wind speed Sensitivity analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000687829200008
WOS关键词	WINTER-WHEAT ; SPRING WHEAT ; YIELD ; IRRIGATION ; RESISTANCE ; DENSITY ; TRAITS ; STRESS ; GROWTH ; RICE
WOS类目	Agronomy
WOS研究方向	Agriculture
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363235
作者单位	[Wang, Ning; Wang, Feng-Xin; Meng, Chao-Biao; Huang, Ze-Jun; Gao, Lei; Zhao, Jian-Yu] China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China; [Shock, Clinton C.] Oregon State Univ, Malheur Expt Stn, 595 Onion Ave, Ontario, OR USA
推荐引用方式 GB/T 7714	Wang, Ning,Wang, Feng-Xin,Shock, Clinton C.,et al. Evaluating quinoa stem lodging susceptibility by a mathematical model and the finite element method under different agronomic practices[J]. 中国农业大学,2021,271.
APA	Wang, Ning.,Wang, Feng-Xin.,Shock, Clinton C..,Meng, Chao-Biao.,Huang, Ze-Jun.,...&Zhao, Jian-Yu.(2021).Evaluating quinoa stem lodging susceptibility by a mathematical model and the finite element method under different agronomic practices.FIELD CROPS RESEARCH,271.
MLA	Wang, Ning,et al."Evaluating quinoa stem lodging susceptibility by a mathematical model and the finite element method under different agronomic practices".FIELD CROPS RESEARCH 271(2021).