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不同时期的ＣＰＰＵ处理都提高了李的座果率。盛花期以喷１０ｍｇ／ｋｇ效果显著，花后１０ｄ以喷５ｍｇ／ｋｇ效果显著。盛花后１０ｄ喷ＣＰＰＵ处理能增加李的单果重，提高其可溶性固形物和维生素Ｃ的含量，以５ｍｇ／ｋｇ处理效果显著。
Different periods of CPPU treatment increased the rate of fruit set. Full flowering to spray 10mg / kg significant effect, spray 10d to spray 5mg / kg effect is significant. Spraying CPPU 10 days after flowering increased the single fruit weight and increased the content of soluble solids and vitamin C, and the effect was obvious at 5 mg / kg.