干旱区生态环境知识资源中心(Arid): Study on Water and Salt Transport Characteristics of Sunflowers under Different Irrigation Amounts in the Yellow River Irrigation Area

Arid

DOI	10.3390/agronomy14051058
	Study on Water and Salt Transport Characteristics of Sunflowers under Different Irrigation Amounts in the Yellow River Irrigation Area
	Tong, Changfu; He, Rui; Wang, Jun; Zheng, Hexiang
通讯作者	He, R
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2024
卷号	14 期号:5
英文摘要	The control of irrigation volume is of significant importance in arid regions of northwest China. Particularly, it has a crucial impact on the salinization of shallow groundwater areas. In 2022 and 2023, field experiments were conducted to test three distinct under-membrane irrigation treatments. These treatments were assigned water quotas of HW (27 mm), MW (22.5 mm), and LW (18 mm). The HYDRUS-2D model was integrated with a field experiment to accurately simulate the dynamic fluctuations of soil water and salt in the sunflower root zone. The model's performance was assessed and verified using real-field data from 2022 and 2023, and the simulation results closely matched the measured values. This research also used stable hydroxide isotopes to assess the water supply from various soil layers at different time intervals in sunflower plants. The results indicated that the three different levels of irrigation applied under the membrane had a significant impact on soil water content. Specifically, there was a significant difference in soil water content at a depth of 0-40 cm (p < 0.05), while there was little effect on the water content at a depth of 40-60 cm (p > 0.05). After irrigation, the average salt content in the top 0-20 cm of soil decreased by 7.0% compared to the medium and low irrigation levels, and by 10.8% compared to the medium irrigation level. Additionally, the medium irrigation level resulted in a 10.8% decrease in salt content compared to the low irrigation level, and a 4.1% decrease compared to the medium irrigation level. During the same period, the soil salinity levels at depths of 0-20 cm, 20-40 cm, 40-60 cm, and 60-100 cm in the area outside the membrane were measured to be 2.7 similar to 4.8 g center dot kg(-1), 2.8 similar to 4.0 g center dot kg(-1), 2.7 similar to 3.4 g center dot kg(-1), and 1.7 similar to 2.6 g center dot kg(-1), respectively. These levels decreased by 13.1 similar to 55.5%, 0.7 similar to 42.8%, -0.4 similar to 16.2%, and -72.7 similar to 7.5%, respectively. Following irrigation, the HW treatment mostly absorbed water in the 0-40 cm soil layer, while the MW and LW treatments absorbed water in both the 0-40 cm and 60-80 cm soil levels. The results indicated that the most optimal drip irrigation method beneath the membrane in this location was achieved when the amount of water applied was between 25-30 mm. This method demonstrated a combination of water conservation, high crop yield, and effective salt suppression.
英文关键词	HYDRUS-2D model hydrogen and oxygen isotopes soil water salinity water use efficiency Yellow River Irrigation District
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:001233535100001
WOS关键词	DRIP IRRIGATION ; SIMULATIONS ; HYDRUS ; GROUNDWATER ; SYSTEM ; COTTON ; CHINA ; FIELD
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/2XILL650/402776
推荐引用方式 GB/T 7714	Tong, Changfu,He, Rui,Wang, Jun,et al. Study on Water and Salt Transport Characteristics of Sunflowers under Different Irrigation Amounts in the Yellow River Irrigation Area[J],2024,14(5).
APA	Tong, Changfu,He, Rui,Wang, Jun,&Zheng, Hexiang.(2024).Study on Water and Salt Transport Characteristics of Sunflowers under Different Irrigation Amounts in the Yellow River Irrigation Area.AGRONOMY-BASEL,14(5).
MLA	Tong, Changfu,et al."Study on Water and Salt Transport Characteristics of Sunflowers under Different Irrigation Amounts in the Yellow River Irrigation Area".AGRONOMY-BASEL 14.5(2024).