不同修剪时期对中油桃8号桃树势及产量的影响OA

This study aimed to investigate the effects of different pruning periods on tree vigor,yield,and fruit quality of Prunus persica L.Batsch'Zhongyoutao 8',and to provide a theoretical basis and production reference for screening the optimal pruning period for vigor control and quality improvement of this variety.Taking 8-year-old'Zhongyoutao 8'peach trees as test materials,four pruning periods were set up for a comparative experiment from 2024 to 2025,namely leaf-on pruning(October 2024),flowering stage pruning(April 2025),young fruit stage pruning(June 2025),and traditional winter pruning(February 2025).The branch composition,yield,and fruit quality indexes of each treatment were determined and analyzed.The results showed that the proportion of vigorous branches in the traditional winter pruning treatment was as high as 55.90％,and the distribution of branch composition in the young fruit stage pruning treatment was more uniform;the proportion of short branches in the flowering stage pruning treatments was above 40％,and the proportion of vigorous branches was only about 10％.There were significant differences in yield per 667 m2 among different pruning period treatments,among which the yield per 667 m2 of the flowering stage pruning treatment reached 2,030.28 kg,which was significantly higher than that of the other three treatments.The soluble solid content of fruits in the flowering stage pruning and young fruit stage pruning treatments were 14.53％and 14.80％,respectively,which were significantly higher than 12.70％in the winter pruning treatment,and the titratable acid content of the two treatments was lower.In conclusion,pruning at the flowering stage can effectively regulate the growth vigor of'Zhongyoutao 8'peach trees and significantly improve fruit yield and quality.It is recommended to be popularized and applied in the production of this variety.