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This experiment use different concentrations of retardants PP333、CCC to spray the Agapanthus africanus. Research the affection of the retardants to the plants in morphological characteristics, flowering performance, and Physiological indexes. Select the appropriate concentration of retardants. Results show that:The growth of biennial plant with the CCC in concentration of 500mg/L and 1000mg/L, separately reduce in 7.45cm and 8.22cm. 1000mg/L CCC improve the biennial plant flowering rate 10%,500mg/L CCC reduce the biennial plant flowering rate 10%.500mg/L and 1000mg/L CCC separately reduce leaf area grow in 7.81cm2 and 8.14cm2, reduce scapes showed in 18.06cm and 20.81cm, increase scapes showed crude in 0.30cm and 0.34cm, separately increase small flower count in 0.6 and reduce it in 0.2.500mg/L and 1000mg/L CCC increase the chlorophyll content more than 20% increase the soluble protein more than 25%.500mg/L and 1000mg/L CCC can obviously dwarf plant, reduce leaf area, reduce scapes showed, increase scapes showed crude, so we can use these two concentration to dwarf plant.The growth of Four-year raw plants with the CCC in concentration of 500mg/L and 1000mg/L, separately reduce 6.38cm and 7.41cm.500mg/L and 1000mg/L CCC separately reduce the flowering rate in 30% and 70%, reduce scapes showed in 33.14cm and 32.12cm, increase scapes showed crude in 0.36cm and 0.39cm, reduce small flower count in 27.6 and 33.8.500mg/L and 1000mg/L CCC increase the chlorophyll content more than 20%, increase the soluble protein more than 25%.500mg/L and 1000mg/L CCC can obviously dwarf plant, reduce leaf area, reduce scapes showed, increase scapes showed crude, but the flowering rate and small flower count is lower than contrast plant, so we should do more rescerch with other concentration.500mg/L PP333 dwarf plant in 7.68cm reduce leaf area grow in 10.46cm2,1000mg/L PP333 can causes so severe phytotoxicity to biennial plant, that the plant will lose the leaf and can not bloom, it severely reduce Three physiological indexes.500mg/L PP333 severely reduce the hight of Four-year raw plants, but the flowering rate is only 20%.1000mg/L PP333 can causes so severe phytotoxicity to biennial plant, that the plant will lose the leaf and can not bloom, it severely reduce three physiological indexes.
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