“防落素”又叫“蕃茄灵”,是近两年广大菜农用于代替2.4—D防止蕃茄落花、促进结果的一种植物生长调节剂。与2.4—D比较,其优点一是可喷施,其药液对蕃茄叶片不产生药害,省去了2.4 “Anti-pigmented”, also known as “tomato spirit”, is a plant growth regulator used by most vegetable farmers in the past two years instead of 2.4-D to prevent tomato from falling off and promote the result. Compared with 2.4-D, one of its advantages can be sprayed, the liquid medicine does not produce phytotoxicity on tomato leaves, eliminating the need for 2.4