人工合成生长素类 Naphthalene acetic acid (NAA) 萘乙酸 2-methoxy-3,6-dichlorobenozic acid (dicamba) 2-甲基氧-3,6-苯乙酸 2,4-dichlorophenoacetic acid (2,4-D) 2,4-二氯苯氧乙酸 2,4,5-trichlorophenoacetic acid (2,4,5-T) 2,4,5-三氯苯氧乙酸 CH COOH 2 Cl Cl COOH O-CH3 Cl Cl O-CH COOH 2 Cl Cl Cl O-CH COOH 2人工合成生长素类 Naphthalene acetic acid (NAA) 萘乙酸 2-methoxy-3,6-dichlorobenozic acid (dicamba) 2-甲基氧-3,6-苯乙酸 2,4-dichlorophenoacetic acid (2,4-D) 2,4-二氯苯氧乙酸 2,4,5-trichlorophenoacetic acid (2,4,5-T) 2,4,5-三氯苯氧乙酸 CH COOH 2 Cl Cl COOH O-CH3 Cl Cl O-CH COOH 2 Cl Cl Cl O-CH COOH 2