摘要
辽西地区土壤墒情年际变化较大,近39年呈显著减少趋势。2019年春播期4月辽西地区降水较常年偏少9成以上,浅层土壤干旱面积达99.9%,墒情为近39年最差的一年。前一年封冻前底墒差、4月降水异常偏少、入春以来气温持续偏高为春播以来辽西干旱的主要原因。
The interannual variation of soil moisture in the western Liaoning area is relatively large,showing a significant decrease in the past 39 years.The spring sowing period in April 2019 was less than 90%less than usual in the western Liaoning area,and the dry area of shallow soil reached 99.9%,and the situation was the worst year in nearly 39 years.The previous years frost before the freezing season,the unusually low precipitation in April,and the continued high temperature since the beginning of spring were the main reasons for drought in western Liaoning since spring sowing.
作者
胡春丽
刘东明
王贺然
王阳
陈鹏狮
王婉昭
焦敏
黄岩
林蓉
Hu Chun-li(Ecological Meteorology and Satellite Remote Sensing Center of Liaoning Province,Shenyang,Liaoning 110016)
出处
《农业灾害研究》
2020年第4期62-64,68,共4页
Journal of Agricultural Catastrophology
基金
中国气象局沈阳大气环境研究所和辽宁省农业气象灾害重点实验室项目“辽宁省水稻气候年景预测技术研究”。
关键词
辽西
农业干旱
成因
Western Liaoning
Agricultural drought
cause
