Precipitation Variation and Trend Analysis of Agricultural Drought and Flood in Fuxin of Liaoning Province

[Objective]Characteristics of precipitation and drought trends are studies so as to serve local agricultural economic development and agricultural restructuring.[Method]The climate tendency rate as well as dry and wet index method is adopted.[Result] In recent 48a,the precipitation amount and precipitation days are reducing,resulting in increasing frequency of drought,which becomes serious especially after two successive years of drought.The annual precipitation reduces by 68 mm,and the precipitation during the growth season of agricultural crops reduces by 77 mm;the days with ≥ 0.1 mm,≥ 5.0 mm,≥ 10.0 mm precipitation reduce by 11.8 days,3.3 days and 0.8 days respectively;the dry index K value drops by 0.197,the frequency of drought increases by 23.4% during the growth season of agricultural products,the frequency of middle-level drought increases by 20.0% during the seed germination stage,the frequency of light drought increases by 20.5% during the vigorous growth stage,and the frequency of middle-level drought increases by 32.2% during the maturity stage.