Page 176 - 工程实例解说灌区规模确定
P. 176
工程实例解说灌区规模确定
Explanation of Engineering Examples and Determination of Irrigation Area Scale
表 2-15 1940—2002 年周至站灌溉期降水量、频率统计表
春灌期降水 夏灌期降水 秋灌期降水 冬灌期降水 年降水
年份 降水量 频率 降水量 频率 降水量 频率 降水量 频率 降水量 频率
(mm) (%) (mm) (%) (mm) (%) (mm) (%) (mm)(%)
1940 86.0 84.4 340.0 14.1 254.0 21.9 16.0 67.2 696.0 31.3
1941 64.0 93.8 215.0 65.6 286.0 18.8 17.1 62.5 582.1 64.1
1942 237.8 6.3 185.4 78.1 210.3 43.8 2.9 92.2 636.4 48.4
1943 196.0 23.4 169.5 85.9 253.0 23.4 12.1 76.6 630.6 51.6
1944 122.5 57.8 221.0 62.5 159.0 71.9 19.5 51.6 522.0 76.6
1945 91.0 79.7 329.0 15.6 193.0 53.1 17.7 59.4 630.7 50.0
1946 73.0 92.2 150.7 90.6 180.5 60.9 29.0 29.7 433.2 92.2
1947 81.0 87.5 175.0 84.4 96.1 89.1 11.5 79.7 363.6 96.9
1948 175.2 31.3 199.4 73.4 289.3 17.2 51.5 6.3 715.4 23.4
1949 122.0 59.4 235.0 51.6 378.8 7.8 32.4 21.9 768.2 14.1
1950 162.4 35.9 216.1 64.1 359.8 9.4 28.6 34.4 766.9 15.6
1951 80.2 89.1 210.7 71.9 243.6 25.0 29.0 31.3 563.5 67.2
1952 208.5 17.2 574.3 3.1 202.0 51.6 13.8 68.8 998.6 4.7
1953 139.1 51.6 314.6 23.4 134.2 76.6 40.5 14.1 628.4 54.7
1954 184.5 28.1 296.3 32.8 209.1 45.3 66.1 3.1 756.0 17.2
1955 55.0 96.9 280.2 37.5 333.5 12.5 38.0 15.6 706.7 26.6
1956 117.9 62.5 514.2 4.7 47.3 98.4 16.7 65.6 696.1 29.7
1957 145.4 45.3 496.7 6.3 100.6 85.9 27.3 40.6 770.0 12.5
1958 181.3 29.7 590.5 1.6 290.8 15.6 20.7 48.4 1083.3 3.1
1959 144.8 46.9 175.6 81.3 166.6 68.8 49.9 7.8 536.9 70.3
1960 142.5 48.4 319.6 20.3 162.4 70.3 2.8 93.8 627.3 57.8
1961 148.5 43.8 255.8 42.2 240.6 28.1 8.1 85.9 653.0 43.8
1962 82.3 85.9 324.8 18.8 257.8 20.3 37.0 17.2 701.9 28.1
1963 293.6 3.1 222.0 60.9 218.8 34.4 11.8 78.1 746.2 20.3
1964 318.5 1.6 167.8 87.5 382.0 6.3 46.1 9.4 914.4 6.3
1965 209.5 14.1 327.6 17.2 169.6 67.2 19.8 50.0 726.5 21.9
1966 95.4 75.0 223.9 59.4 170.5 65.6 29.7 26.6 519.5 79.7
1967 241.4 4.7 212.3 70.3 218.3 35.9 17.9 57.8 689.9 34.4
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