都市农业的几大特色欧美、日本等工业发达国家以都市农庄为主体的都市农业正在蓬勃发展。在１９７５～１９９４年的２０年间，这些国家都市农庄的面积年均递增１０％，其产值由不足５０００万美元增至目前的约５０亿美元，预计本世纪末可达７５～８５亿美元。这些国家都市... Several major characteristics of urban agriculture Europe and the United States, Japan and other industrialized countries to urban farms as the main urban agriculture is booming. In the two decades between 1975 and 1994, the area of ​​urban farms in these countries increased at an average annual rate of 10%. Its output value has risen from less than 50 million U.S. dollars to about 5 billion U.S. dollars now. It is estimated that the total area will reach 7.5 to 8.5 billion U.S. dollars by the end of this century. These countries are cities ...