Research on the Water Consumption Characteristics of Spring Corn Irrigation in Yangcheng County
In order to further optimize the irrigation scheduling of spring corn in Yangcheng County,the interannual variation in water demand and precipitation of spring corn at different growth stages were analyzed and calculated using meteorological data from 1960 to 2019.The irrigation water consumption for local spring corn in typical irrigation years(25％,50％,75％,95％guarantee rates)were calculated.The results show that over the past 60 years,the average annual water demand for spring corn throughout its entire growth period in Yangcheng County is 532.49 mm,and the climate tendency rate is decreasing with a trend of 2.68 mm/(10 a).The average annual precipitation is 411.65mm,and the climate tendency rate is decreasing with a trend of 13.11 mm/(10 a).The four typical irrigation years(25％,50％,75％,and 90％guarantee rate)require supplementary irrigation water,which are 80.70 mm,188.40 mm,350.43 mm,and 532.83 mm in sequence.
spring cornwater demandprecipitationsupplementary irrigation water quantity
万方数据
维普
