关键词: 农业作物, 干旱, 冬小麦, 干旱指标, 节水措施

Abstract: According to the growth characteristics of winter wheat in Cangzhou City,this paper took the average precipitation from October to December during 1956~2016and the average precipitation from January to May in the next year as the growth period water supply quantity of winter wheat,it also took the water supply and crop water requirement ratio as the actual drought index,and then analyzed and calculated the drought condition of winter wheat in natural state in Cangzhou.In almost every year in the past 60years,the winter wheat showed different degrees of drought,and the year of heavy drought and extreme drought reached 83%of the total year.This result shows that in winter wheat growing period also called non-flood season,the precipitation in Cangzhou is seriously insufficient,resulting in serious shortage of water resources,serious restriction of agriculture production,and effect on the ecological environment.Therefore,it is necessary to formulate and implement the water-saving measures,such as developing water-saving agriculture,improving the planting structure and other measures,so as to ensure the normal development of agricultural production and the continuous improvement of the ecological environment.

Key words: agricultural crops, drought, winter wheat, drought index, water-saving measures