日本东京一家超级市场内的“菜地”——水栽蔬菜工厂的水栽槽内,有的是萌芽的莴苣种子,有的是正待收获出售的成熟的莴苣植株。槽内的水全靠水泵抽入,水中富含氮、钙、磷、钾等营养成份。工厂内的环境控制极其严格,蔬菜不会受到病虫及杂草的侵害,无需施用农药。工厂内 Some of the aquatic plants in the “vegetable field” - hydroponic vegetable factory in a supermarket in Tokyo, Japan are sprouted lettuce seeds, and some mature lettuce plants are ready for sale. The water tank all by the pump into the water is rich in nitrogen, calcium, phosphorus, potassium and other nutrients. Environmental control in the factory is extremely strict, vegetables will not be pests and weeds infringement, without the need to apply pesticides. Inside the factory