1.往果树上喷植物调节剂2,4—D异丙酯,防止果柄产生离层,可使橙类水果留树贮存5—6个月,保证终年有采摘鲜果供应,而且果中的维生素C、含糖量和果汁都有增加,风味上好。这种办法目前在美国加利福尼亚推广。 2.乙烯有加速水果成熟的作用,在果蔬包装中放置乙烯,可延缓果蔬衰老而达到保鲜的目的。 1. Spraying the plant regulator 2,4-D isopropyl on the fruit tree to prevent the stalk from separating, allowing the orange fruits to remain in the tree for 5-6 months to ensure the supply of fresh fruits throughout the year, and the fruit Vitamin C, sugar content and juice have increased, the flavor is good. This approach is currently in California in the United States to promote. 2. Ethylene has the effect of accelerating fruit ripening, placing ethylene in fruit and vegetable packaging can delay the aging of fruits and vegetables to achieve the purpose of preservation.