7-5     主要年份耕地面积
CULTIVATED AREA IN MAJOR YEARS
单位: 千公顷   (1 000 ha)
    
 
Year 
耕地总资源
Resoruces of
Cultivated Area 
    有效灌溉
        
Effective
Irrigated Area
    机耕地面积
Area Cultivated
by Machine
#常用耕地
 面  积
Cultivated Area
in Common Use      
#机电灌溉面积
Mechanical and
Electrical
Irrigated Area
       
1952 4623.13   406.25                0.80
1957 4541.76   582.67 26.67 134.96
1962 4135.93   643.37 104.67 465.33
1965 4153.37   701.67 166.67 856.11
1970 3887.63   856.76 369.48 888.07
1975 3921.79   1042.93 682.65 1460.35
1978 3923.41   1092.48 766.30 1936.99
1980 3921.46   1115.14 775.22 1777.76
1985 3761.09   1079.10 776.98 1916.74
1990 3692.51   1134.45 836.74 1987.08
1995 3645.09   1201.99 891.74 2143.55
2000 4341.94   1105.04 939.07 2270.24
2001 4290.07   1104.25 941.56 2321.34    
2002 4063.04 3393.39 1103.70 947.20 2208.44
2003 3893.87 3298.10 1095.25 948.58 2098.13
2004 3833.78 3272.24 1088.15 948.72 2085.14
2005 3793.19 3259.61 1088.59 946.39 2042.27