一当西红柿成熟时,菜农和零售商所面临的难题是如何防止产品的损伤和腐烂。为了避免这种麻烦,延长运输和销售时间,各国基本上采取的是一种原始的方法:将植株上只有6—8成熟的生青和坚硬的西红柿采摘下来,然后装箱运送到城市的售货点。虽然收 As tomatoes mature, the challenge farmers and retailers face is how to prevent product damage and decay. In order to avoid this kind of troubles and to extend the transportation and marketing time, basically all countries adopt a primitive method of picking up only 6-8 mature green and hard tomatoes on plants and then packing them for sale in the cities Cargo point. Although closed