辽宁农业科学Issue(6)：18-23,6.DOI:10.3969/j.issn.1002-1728.2023.06.004
阜新春播关键期土壤墒情变化特征及预测模型的构建
Characteristics and Forecasting Methods of Soil Moisture during the Key Period of Spring Sowing in Fuxin
摘要
Abstract
Using meteorological data from 1981 to 2022 in Fuxin,the changing characteristics of soil moisture during the critical period of spring sowing were analyzed.The results show that the soil moisture of the topsoil during the critical period of spring sowing in Fuxin has shown a decreasing trend over the past 42 years,with a climate tendency rate of-0.3/10 a.The soil moisture has two dry-wet cycles,the main cycle is 36～45 a and the secondary cycle is 12～14 a.A mutation occurred in 1999 a,leading to a significant decrease in soil moisture after the mutation.The soil moisture during the critical period of spring sowing in Fuxin is negatively correlated with the average wind speed from September to November of the previous year and positively correla-ted with the relative humidity of the air.Both correlations passed the significance test with a significance level of 0.01.The predictive equation for the soil moisture during the critical period of spring sowing was calculated and passed the significance test,indicating its practical value.关键词
春播关键期土壤墒情/变化特征/Morlet小波分析/MK突变分析/阜新地区Key words
Soil moisture during the key period of spring sowing/Variation characteristics/Morlet wavelet a-nalysis/MK mutation analysis/Fuxin region分类
农业科技引用本文复制引用
陶倩,舒海燕,赵振宇,范野,杨晓彤,赵巍,赵军..阜新春播关键期土壤墒情变化特征及预测模型的构建[J].辽宁农业科学,2023,(6):18-23,6.基金项目
辽宁省气象局科研项目(ZD202208) （ZD202208）
阜新市气象局科研项目(FX202307) （FX202307）
