7-6    主要年份耕地面积 CULTIVATED AREA  IN MAJOR YEARS
单位:千公顷                                                                                                                                                                 (1000ha)
年    份   Year	耕地面积 Cultivated Area		有效灌溉   面        积 Effective Irrigated Area		机耕地面积 Area Cultivated by Machine
		#旱  地    Dry Fields		# 机电灌溉面积 Mechanical and Electrical Irrigated Area
1952	4623	4619.31	406.25		0.80
1957	4542	4536.83	582.67	26.67	134.96
1962	4136	4129.55	643.37	104.67	465.33
1965	4153	4145.90	701.67	166.67	856.11
1970	3888	3878.06	856.76	369.48	888.07
1975	3922	3910.35	1042.93	682.65	1460.35
1978	3923	3911.00	1092.48	766.30	1936.99
1980	3921	3907.48	1115.14	775.22	1777.76
1985	3761	3750.58	1079.10	776.98	1916.74
1990	3693	3681.77	1134.45	836.74	1987.08
1995	3645	3636.30	1201.99	891.74	2143.55
1997	4398	4388.51	1058.10	913.14	2166.81
1998	4372	4363.18	1068.59	924.66	2183.81
1999	4357	4348.90	1092.03	930.85	2156.00
2000	4342	4333.47	1105.04	939.07	2270.24
2001	4290	4282.03	1104.25	941.56	2321.34