Thin flowers and fruits, shape
隐藏域元素占位
Thin flowers and fruits, shape
Ethephon
Spraying 37.5mg/L ethephon 35d and 42d after blooming has obvious fruit thinning effect, but there will be deciduous fruit drop phenomenon. Adding 100mg/L gibberellic acid will alleviate the deciduous fruit drop phenomenon. However, the concentration of ethephon used by different varieties is quite different.
1-Naphthaleneacetic acid (NAA).
Peach peach was sprayed with NAA40-60mg/L solution on the 14th day after flowering, which had a thinning effect, and the effect was close to that of artificial fruit thinning; spraying 40mg/L and 60mg/L solutions in full bloom period, the fruit thinning rate could reach 69.99% and 41.61%."Okubo" sprayed 20mg/L, 40mg/L and 60mg/LNAA on the 14th day after flowering had no dredging effect, while spraying 20mg/L and 40mg/L liquid medicine in full bloom stage had significant effect, and the fruit setting rate was 55.79% and 77.42% of the reference material respectively.
Chlorflurenol-methy.
7d after full bloom, spraying 60mg/L chlorflurenol-methy on "Baifeng" and "Okubo" respectively, the thinning effect meets the production requirements, and the peak of fruit drop is 14-21d earlier than the control, which saves nutrients and is more efficient than artificial fruit thinning. The cost is saved by more than 50%, the retained peach fruit is large and of good quality, the coloring index is increased by 27%-28%, and it can be harvested 7 days earlier, and the value-added is significant.
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