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按月从7月15日到11月15日种植的菠萝,以及用碳化钙(20克/升),乙烯利(0.25毫升/升)和萘乙酸(20毫克/升)处理的,在种后335天,对菠萝
Pineapples planted monthly from July 15 to November 15 and those treated with calcium carbide (20 g / l), ethephon (0.25 ml / l) and naphthalene acetic acid (20 mg / l) 335 days to pineapple