摘要
为了对湖北省农业干旱作出客观而科学的评价，本文从农业生产实际情况出发，用“条件”水分平衡方法，提出了一个综合考虑水分盈亏和同期作物需水量的农业干旱指标Ｉ＝（Ｐ－Ｅｐ）／Ｑ，并用此指标分析了湖北省近３０年来主要干旱类型的时空分布特征及对农业生产的影响，同时结合各地各种类型各级干旱出现频次进行了农业干旱分区。
To estimate the agrodrought in Hubei province objectively and scientifically, a agrodrought index I=(P-Ep)/Q, considering both water budget and crop water requirement is established in current paper. It is according to the agriculture production case by means of‘conditional’water balance.With this index, the characteristics of the temporal and spatial distribution and its impacts on agriculture of main agrodrought varieties in Hubei province in the recent 30 years are discussed.Meanwhile, the division of agrodrought is made by combining with drought frequencies of various varieties and levels in different areas.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1994年第6期621-624,共4页
Journal of Huazhong Agricultural University
基金
湖北省科委重点资助
关键词
农业干旱
干旱
指标
时空分布
湖北省
agrodrought
index
temporal and spatial distribution
Hubei province
