我区地处魯中南,北部是沂蒙山区,南部是临、郯、蒼平原,中間有沂、沈两大河流纵貫南北。总面积约20536平方公里,耕地面积1525万亩,其中山地占34.3%,丘陵占28.4%,平原、涝洼占37.3%。全区共有大小山头7,000余个,大小河流19,000多条。解放前,这里的农业生产基础和生产条件都很 My area is located in Lusaka, the Yimeng Mountain in the north, the Pro is, in the south, Cang plain, in the middle of Yixian, Shen two rivers run north and south. The total area of ​​about 20,536 square kilometers, 1525 acres of arable land, of which 34.3% of the mountains, hills accounted for 28.4%, plain, floods accounted for 37.3%. The region has a total size of more than 7,000 hills, more than 19,000 large and small rivers. Before liberation, the basic agricultural production here and the production conditions are very high