Peach tree thinning of flowers and fruits, pruning
隐藏域元素占位
Peach tree thinning of flowers and fruits, pruning
Peach tree thinning of flowers and fruits, application of pruning regulators
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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