干旱区生态环境知识资源中心(Arid): Maize is stressed by salt rather than water under drip irrigation with soil matric potential higher than-50 kPa in an arid saline area

Arid

DOI	10.1111/jac.12497
	Maize is stressed by salt rather than water under drip irrigation with soil matric potential higher than-50 kPa in an arid saline area
	Zhang, Tibin; Ji, Xiangxiang; Zhan, Xiaoyun; Ding, Yuntao; Zou, Yufeng; Kisekka, Isaya; Chau, Henry Wai; Feng, Hao
通讯作者	Feng, H (corresponding author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	JOURNAL OF AGRONOMY AND CROP SCIENCE
ISSN	0931-2250
EISSN	1439-037X
出版年	2021
英文摘要	Water scarcity and soil salinization are the top abiotic stresses impeding agricultural production in arid and semi-arid regions. To evaluate maize growth is depressed by water stress or salt stress independently as well as in combination under drip irrigation, a 3-year field experiment was conducted in the Hetao Irrigation District, north-west China. The soil was moderately saline with ECe (electrical conductivity of saturated extract) of 7.1 dS/m. Five threshold values of soil matric potential (SMP): -10 kPa (S1), -20 kPa (S2), -30 kPa (S3), -40 kPa (S4), and -50 kPa (S5), were used to trigger a 10-mm drip irrigation. With triplicate for each treatment, 15 plots were arranged in a randomized block design permanently during the experimental period. Results showed that the higher SMP facilitated the formation of low-salinity zone. The water holding depths in root zone were generally above the refill point (threshold of readily available water, 0.23 cm(3)/cm(3) for maize) during the growing seasons for all treatments, indicating maize could extract water easily from soil. Controlling SMP > -30 kPa (S1, S2, S3) produced the higher leaf area index, specific leaf area, biomass and grain yield significantly than S4 and S5; however, no significant difference in relative chlorophyll contents was detected among treatments. Grain yield was reduced by 6.8% per dS/m increase in soil ECe beyond salt tolerance of maize. Based on the soil readily available water for maize growth, crop's responses and data analysis, it could be concluded that salt stress, rather than water stress, was the key factor causing the reduced grain yield in this study. Taking into account the grain yield and water-use efficiency, SMP threshold of -30 kPa was recommended for drip irrigation maize in this saline soil. These findings are conducive to the extension of drip irrigation, and increasing the resilience of crop production under the arid saline condition.
英文关键词	crop salt production function crop salt tolerance mulched drip irrigation readily available water soil matric potential water‐ use efficiency
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000646212100001
WOS关键词	DROUGHT-STRESS ; SODIC SOIL ; YIELD ; GROWTH ; MANAGEMENT ; PRODUCTIVITY ; EFFICIENCY ; NITROGEN ; CROPS ; INDEX
WOS类目	Agronomy
WOS研究方向	Agriculture
来源机构	西北农林科技大学 ; University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352296
作者单位	[Zhang, Tibin; Ji, Xiangxiang; Zhan, Xiaoyun; Ding, Yuntao; Zou, Yufeng; Feng, Hao] Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling, Shaanxi, Peoples R China; [Zhang, Tibin; Zhan, Xiaoyun; Feng, Hao] Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China; [Zhang, Tibin; Zhan, Xiaoyun; Kisekka, Isaya] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA; [Chau, Henry Wai] Lincoln Univ, Dept Soil & Phys Sci, Lincoln, New Zealand
推荐引用方式 GB/T 7714	Zhang, Tibin,Ji, Xiangxiang,Zhan, Xiaoyun,et al. Maize is stressed by salt rather than water under drip irrigation with soil matric potential higher than-50 kPa in an arid saline area[J]. 西北农林科技大学, University of California, Davis,2021.
APA	Zhang, Tibin.,Ji, Xiangxiang.,Zhan, Xiaoyun.,Ding, Yuntao.,Zou, Yufeng.,...&Feng, Hao.(2021).Maize is stressed by salt rather than water under drip irrigation with soil matric potential higher than-50 kPa in an arid saline area.JOURNAL OF AGRONOMY AND CROP SCIENCE.
MLA	Zhang, Tibin,et al."Maize is stressed by salt rather than water under drip irrigation with soil matric potential higher than-50 kPa in an arid saline area".JOURNAL OF AGRONOMY AND CROP SCIENCE (2021).