Comprehensive Assessment of the Intensity of Continuous Rain During the 2023 Mature Period of Winter Wheat in Henan Province
To construct the continuous rain disaster intensity index suitable for winter wheat maturity in Henan Province and to clarify the sensitive time of wheat affected by continuous rain there,this article analyzes the continuous rain disaster and the related development of stages of wheat in Henan in 2023 and studies the correlation between major meteorological factors and the disaster intensity index of continuous rain by using meteorological and agrometeorological observations of 111 stations in Henan from 1961 to 2023.Three kinds of disaster intensity indexes of continuous rain during winter wheat maturity are con-structed based on the results of previous research combined with the actual situation in Henan.The re-sults show that:(1)More than 35 days after winter wheat flowering is the most sensitive time for wheat grain quality to be affected by continuous rain.(2)The continuous rain disaster intensity index L2 and L3 at the maturity stage of winter wheat can be in good agreement with the Henan winter wheat disaster con-dition in 2023 due to the continuous rain event.Especially,the index L3 is practical and accurate,able to meet the needs of operational service requirements.(3)In 2023,the spatial distributions of the inten-sity indexes L2 and L3 of continuous rain disaster during wheat ripening in Henan both are high in the south and low in the north,with L2 being 0.81 and L3 being 0.32 on average in the whole province,and both are the highest values since 1961.
wheatmature periodcontinuous raindisaster intensity index
万方数据
维普
