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宜昌蒸发站2010~2021年土壤墒情变化规律分析
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Abstract:
土壤墒情监测与分析对于指导农业生产、制定科学的作物种植策略具有重要意义。选取宜昌蒸发站2010~2021年的土壤墒情以及同期的降雨和气温等资料，采用数理分析方法，揭示土壤墒情变化规律，并以2022年8月旱情为例进行分析。结果表明：宜昌蒸发站土壤含水率与降雨量的月际变化规律一致，在夏季高温时段受气温影响显著，3~6月份为土壤含水率高位时段，1、8、12月份为土壤含水率低位时段，1~2月份与9~11月份的土壤含水率基本持平；年际变化主要受到降雨因素的影响。通过分析总结宜昌蒸发站的土壤墒情变化规律，可为农业生产以及水文监测工作提供指导。
Soil moisture monitoring and analysis is of great significance for guiding agricultural production and developing scientific crop planting strategy. This paper selects the data of soil moisture content, rainfall and temperature in the period from 2010 to 2021 at Yichang evaporation station, and uses the mathematical analysis method to analyze the soil moisture change law in a typical drought case in August 2022 was analyzed. The results showed that the inter monthly variation of soil moisture content is consistent with that of rainfall, and it is significantly affected by air temperature in the summer high temperature period. The soil moisture content is high in March to June, low in January, August and December, and the soil moisture content is basically the same in January to February and September to November. The interannual variation is mainly affected by rainfall. By analyzing and summarizing the changing law of soil moisture, it can provide guidance for agricultural production and hydrological monitoring.
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