衡水市2018—2020年土壤墒情时程变化分析

Analysis on time history change of soil moisture in Hengshui City from 2018 to 2020

为科学合理地指导衡水市农业生产,对2018—2020年衡水市开展土壤墒情监测数据和气象数据进行分析。结果表明:监测站区域土壤墒情时程变化总体呈现下降期(3—6月)、上升期(6—8月)和平缓下降期(8—11月)3个阶段;年内变化特征表明土壤重量含水量的变化情况和降水量变化趋势基本一致,汛期时土壤重量含水量达到最高,春季土壤重量含水量相比秋季较低;年际变化特征表明土壤重量含水量受降水影响较大。通过分析衡水市15个监测站土壤墒情随时间的变化规律,对衡水市农业生产及防汛抗旱具有一定指导作用。

In order to scientifically and reasonably guide agricultural production in Hengshui City and provide strategic reference for flood control and drought relief in this area,the monitoring data of soil moisture and meteorological data in Hengshui City from 2018 to 2020 were analyzed.The results show that the time history change of soil moisture in the monitoring station area generally presents three stages:decline period(March June),rise period(June August)and gentle decline period(August November);The annual variation characteristics show that the variation of soil weight water content is basically consistent with the variation trend of precipitation.The soil weight water content reaches the highest in flood season,and the soil weight water content in spring is lower than that in autumn;The interannual variation characteristics show that the soil weight and water content are greatly affected by precipitation.By analyzing the variation law of soil moisture with time at 15 monitoring stations in Hengshui City,it has certain guiding significance for agricultural production,flood control and drought relief in this area.