[1]Han Xinsheng,Xu Hao,Cai Jinjun,et al.Effects of Site Factor and Coverage on Soil Moisture of Maize Field in Zhongzhuang Small Watershed in the Loess Area of Southern Ningxia[J].Research of Soil and Water Conservation,2023,30(06):112-122.[doi:10.13869/j.cnki.rswc.2023.06.015]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 06
Page number:
112-122
Column:
Public date:
2023-10-10
- Title:
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Effects of Site Factor and Coverage on Soil Moisture of Maize Field in Zhongzhuang Small Watershed in the Loess Area of Southern Ningxia
- Author(s):
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Han Xinsheng1,2, Xu Hao1, Cai Jinjun3,4, Dong Liguo1, Guo Yongzhong1, An Yu1, Wan Haixia1, Wang Yueling1
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(1.Research Center for Ecological Restoration and Multi-Functional Forestry of Ningxia,Ningxia Key Laboratory of Desertification Control and Soil and Water Conservation,Institute of Forestry and Grassland Ecology,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750002,China;2.China Institute of Water Resources and Hydropower Research,Beijing 100038,China;3.Institute of Agricultural Resources and Environment,Ningxia Academy of Agriculture and Forestry,Yinchuan 750002,China;4....)
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- Keywords:
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soil moisture; site factor; vegetation coverage; maize; loess region
- CLC:
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S152.7
- DOI:
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10.13869/j.cnki.rswc.2023.06.015
- Abstract:
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[Objective] Exploring the effects of site factors and vegetation coverage on the spatial variability of soil moisture of maize field in small watershed can provide a theoretical basis for the optimization and adjustment of vegetation planting structure and reasonable spatial layout of crops in the watershed. [Methods] The dryland maize in the Zhongzhuang small watershed in the loess hilly area in southern Ningxia was taken as the object, and the soil water content at a depth of 200 cm was obtained by soil drilling method in the middle of the growing season in 2021. The influence of slope aspect, slope position and cover on soil water content was analyzed. [Results] The average soil water content of corn field in small watersheds was 11.93%, and the average soil water content in plat fields was 13.97%, which was significantly higher than that of terraced fields. The average coverage of maize in small watersheds was 0.39, and the coverage in plat fields was 0.45, which was significantly higher than that of terraced fields. In corn terrace, the coverage of sunny slopes was significantly higher than that of shady slopes, and the coverage of downslopes was significantly higher than that of upslopes. As the coverage increased, the soil moisture of maize plat fields decreased or first decreased and then stabilized. The soil moisture of upslope of terraced shady slopes showed an increasing trend, the soil moisture of upslope of sunny slopes showed a decreasing trend, and soil moisture of the other slopes did not change significantly. The soil moisture of the shady slope was higher than that of the sunny slope, and the soil moisture of upper slope was higher than the downward slope, and the difference between them was not significant. When the coverage was 0~0.3 and 0.3~0.6, the soil moisture in the upslope was higher than that the downslope, and when the coverage was 0.6~0.9, the downslope was higher than the upslope. With the deepening of the soil layer, the soil moisture in small watersheds, flat fields, terraced fields, different coverage and different sites generally showed weak changes at first, then increased rapidly, and then gradually stabilized, and most of them were of moderate variability. [Conclusion] The spatial variation of soil moisture in dryland maize in Zhongzhuang small watershed is obvious, and the coverage, slope aspect and slope position have great influence on soil moisture. In the future, the monitoring of soil moisture in maize field at different growth stages should be strengthened.