20亿亩耕地是我国国土资源的精华所在，种植业的主攻方向应放在中产田，并大力加强我国九片商品粮基地的建设。
The present 20 hundred million Mu of cultivated land are the precious part of all the land resources and the land with medium yield deserves much attention We must strengthen the establishment of 9 cereal bases .
应田