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美国在田间进行试验,从盛花期一直到7月初6月落果结束,每天半夜对红冠苹果成龄树进行1.5或15min的红光照射处理,照射量为10μW/cm~2,最大波长为660nm,两种处理都减少了6月落果。
The United States conducted experiments in the field from the full flowering period to the beginning of July and the end of June. After midnight, the adult trees of Hongguan apple were irradiated with red light for 1.5 or 15 minutes. The irradiation was 10μW / cm ~ 2 and the maximum wavelength was 660nm Both treatments reduced the drop in June.