Red Fuji apple is used as the test material,apple trees are sprayed by the foliar spraying method using 0.1%triacontanol microemulsion at dilutions of 2 000 times,1 500 times,1 000 times and 750 times respectively,0.001 6%28-epibrassinolide aqueous solution at 1 000 times dilution,and a blank control.The effects of different treatments on the inflorescence fruit setting rate,single fruit weight,yield and quality of apple tree are compared.The results show that 0.1%triacontanol microemulsion can significantly improve the inflorescence fruit setting rate,fruit shape index and yield of apple trees,while having a relatively small impact on fruit quality.Among them,the 0.1%triacontanol microemulsion with a 1 000 fold solution(S3)has the best effect,increasing yield by more than 15%for two consecutive years.The research results can provide a basis for using 0.1%triacontanol microemulsion in production to promote apple quality and yield.
TriacontanolApple treesInflorescence fruit setting rateYieldFruit quality