柑桔类果实(脐橙、血橙,柠檬和葡萄柚)采用乙烯利(乙烯剂的有效成份)可以成功的催色。用乙烯剂催色要求采摘果色深绿,内部成熟,并符合出口规定的果实。为使傕色有效,必须在果实开始着色时进行。 Citrus fruits (navel oranges, blood oranges, lemons and grapefruits) use ethephon, the active ingredient of the vinyls, to successfully promote color. Requested with vinyl requirements dark green fruit picking, internal maturity, and in line with the provisions of the export of fruits. To make the color effective, it must be done when the fruit begins to color.