Soil moisture is an extremely active factor in the soil, which affects and restricts all fertility factors and production performance in the soil. In agricultural production and scientific research, we can generally use soil moisture tester to determine the soil moisture content. In this paper, the regularity of soil moisture and its correlation between different slope positions, different slope directions and different seasons of the road slope are studied.
1. As the plants under the slope grow well, the plants have a conservation effect on the soil moisture, and due to the influence of gravity, the soil moisture content under the road slope is the highest. Due to the influence of solar radiation intensity and moisture evaporation, the soil moisture content of the sunny slope of the road slope is significantly lower than the soil moisture content of the sunny slope. Due to the strong evaporation of water in summer and the high temperature, the soil moisture content on the four slopes of the road slope was the lowest in July.
2. In addition to the slope, the soil moisture content of road slopes has significant correlation with the soil moisture content between different slope positions and slope directions. The soil moisture content under the slope was only significantly correlated with the season (p<0.05). Excluding the negative correlation between the season and the soil moisture content of each aspect, the rest was positively correlated. Seasonal soil moisture content was closely related to each slope position, but there was no correlation with each aspect water content.
3. The distribution of soil moisture on slopes of roads is the result of comprehensive factors such as rainfall, vegetation, slope position and aspect, and the topography of slope land is closely related to soil erosion. In the research of soil moisture on steep slopes, it cannot be studied in isolation. Soil moisture, but should consider the actual situation of steep slopes, organically combine soil moisture processes with soil erosion processes.
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