干旱区生态环境知识资源中心(Arid): Distribution pattern of rainwater in soil under vertical deep rotary tillage in dryland farmland

Arid

DOI	10.1016/j.agwat.2022.107891
	Distribution pattern of rainwater in soil under vertical deep rotary tillage in dryland farmland
	Yang, Jianjun; Tan, Weijun; Han, Jingren; Li, Feng-Min; Zhang, Feng
通讯作者	Han, JR
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2022
卷号	273
英文摘要	In semi-arid areas, drought is the main limiting factor for rainfed agriculture. Vertical rotary subsoiling (VRT) has been shown to effectively increase soil water storage and so allow crops to resist seasonal drought. However, there is a lack of reports on the infiltration path and distribution pattern of rainwater in soil under VRT practice. The present study used simulated rainfall and visualized the soil profile water distribution and path of VRT, subsoiling tillage (SS) and conventional tillage (CT) practices. Twenty-four hours after applying simulated rain, vertical soil profiles were photographed and staining features used to indicate the infiltration path and distribution of rainwater in the soil. Our results showed that when rainwater infiltrated into the soil, matrix and preferential flows occurred concomitantly under VRT practice, and mainly matrix flow for SS and CT practices. The VRT increased water infiltration into the soil, occurrence of preferential flow and water storage in the soil profile, while the soil of SS and CT somewhat hindered the infiltration of water. The VRT decreased soil bulk density (BD) by 9.2-10.3 % and increased soil saturated hydraulic conductivity (K-s) by 50.4-70.4 % compared with SS and CT. Moreover, VRT significantly increased potato tuber yield by 22.9-36.0 % compared with SS and CT in two consecutive years. Structural equation modeling (SEM) further revealed that VRT increased potato yield was mainly caused by decreasing BD and increasing K-s, and then increasing water storage in the soil profile. These findings suggest that decreased BD and increased K-s in VRT practice could be particularly important for infiltration, sustaining and supplying of soil water in rainfed areas worldwide, which is important for production practices in these areas.
英文关键词	Vertical rotary subsoiling Semi-arid areas Dye tracer Preferential flow Soil saturated hydraulic conductivity Solanum tuberosum L
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000861238500001
WOS关键词	PREFERENTIAL FLOW ; ROOT-GROWTH ; RIDGE-FURROW ; GRAIN-YIELD ; DYE TRACER ; WATER-FLOW ; INFILTRABILITY ; MAIZE ; INFILTRATION ; MANAGEMENT
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391645
推荐引用方式 GB/T 7714	Yang, Jianjun,Tan, Weijun,Han, Jingren,et al. Distribution pattern of rainwater in soil under vertical deep rotary tillage in dryland farmland[J],2022,273.
APA	Yang, Jianjun,Tan, Weijun,Han, Jingren,Li, Feng-Min,&Zhang, Feng.(2022).Distribution pattern of rainwater in soil under vertical deep rotary tillage in dryland farmland.AGRICULTURAL WATER MANAGEMENT,273.
MLA	Yang, Jianjun,et al."Distribution pattern of rainwater in soil under vertical deep rotary tillage in dryland farmland".AGRICULTURAL WATER MANAGEMENT 273(2022).