干旱区生态环境知识资源中心(Arid): Residual plastic film exerts dual effects of blocking and preferential flow on soil water movement

Arid

DOI	10.1016/j.still.2022.105628
	Residual plastic film exerts dual effects of blocking and preferential flow on soil water movement
	Hu, Qi; Li, Xianyue; Shi, Haibin; Chen, Ning; Zhang, Yuehong
通讯作者	Li, XY
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2023
卷号	227
英文摘要	Plastic-film mulching (PFM) significantly improves farmland productivity in arid and semi-arid regions. How-ever, the residual plastic film (RPF), also named white pollution, has become a serious concern. The effect of RPF on soil water flow is unclear, but it has negatively impacted the use of PFM. This study evaluated the effects of RPF on soil physical and hydraulic properties. The impact on infiltration uniformity and preferential flow was examined based on dye tracer technology. The experiments were carried out with 5 RPF levels (0, 150, 300, 450, and 600 kg ha-1), and 4 infiltration amounts (20, 40, 60, and 80 mm). The results showed that increasing RPF amounts decreased soil bulk density and saturated hydraulic conductivity, but increased soil porosity and saturated soil water content in the RPF layer (0-30 cm). RPF accumulation enhanced the blocking effect in the RPF layer promoting preferential flow in the deeper soil layers. In general, with more RPF in soil, dye-stained coverage (DC) and uniform infiltration depth (UniFr) decreased, while the coefficient of variation (CVd), pref-erential flow fraction (PFF), dye-stained depth (MDD), length index (LI), and the difference of soil water storage between before and after dyeing (Delta SWS) increased, especially in the deeper soil layers with high infiltration amount. 450 kg ha-1 RPF produced the strongest preferential flow with a maximum MDD 32.9 cm, PFF 39.2 %, LI 136.8, CVd 0.73 %, and minimum UniFr 8.8 cm. Furthermore, the phenomenon became prominent if higher infiltration amounts were applied; under 450 kg ha-1 RPF, the average CV was 8.0 % higher for 80 mm infil-tration compared with 20 mm infiltration. Finally, correlation analysis shows that the RPF was the main driving factor of preferential flow.
英文关键词	Residual plastic film Infiltration amount Dye tracer Soil properties Preferential flow
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000918230400001
WOS关键词	CROP YIELD ; DYE TRACER ; MULCH ; INFILTRATION ; DEGRADATION ; EVAPORATION ; BEHAVIOR ; TILLAGE ; SYSTEMS ; GROWTH
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398658
推荐引用方式 GB/T 7714	Hu, Qi,Li, Xianyue,Shi, Haibin,et al. Residual plastic film exerts dual effects of blocking and preferential flow on soil water movement[J],2023,227.
APA	Hu, Qi,Li, Xianyue,Shi, Haibin,Chen, Ning,&Zhang, Yuehong.(2023).Residual plastic film exerts dual effects of blocking and preferential flow on soil water movement.SOIL & TILLAGE RESEARCH,227.
MLA	Hu, Qi,et al."Residual plastic film exerts dual effects of blocking and preferential flow on soil water movement".SOIL & TILLAGE RESEARCH 227(2023).