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在三江平原(可包括我省平均降水500m m/a的地区)的典型区涝情分析中,得出两条反映雨情与涝情的相关线。一条是P1+Pa年极值与年粮豆单产(Y)相关线,Y=20.37(P1+Pa)-1348.5,r=+0.646(图1),正相关;一条是年过湿天数(T)与年粮豆单产(Y)相关曲线,Y=2004e-0.000475(T+8)2,r=-0.89(图2
In the typical district waterlogging analysis of the Sanjiang Plain (which can include an average rainfall of 500m m / a in our province), two relevant lines reflecting rain conditions and waterlogging conditions are obtained. One is the correlation between the extreme value of P1 + Pa and the annual yield (Y) of grain per annum, Y = 20.37 (P1 + Pa) -1348.5, r = + 0.646 ) And annual grain yields (Y), Y = 2004e-0.000475 (T + 8) 2, r = -0.89