According to the survey in the thinning orchard demonstration orchard, the light intensity was significantly improved after the density changed from 4 meters to 4 meters and 6 meters. The percentage of apples above 75 mm reached 95%, and the percentage of excellent fruit was above 80%; the output decreased by less than 40%, but However, the price has increased by 1/3, and the excellent fruit rate has increased by 30%. Apple's efficiency has instead been improved. Reforming pruning technology based on thinning will be a major technological change in Qiaohua's closed orchard management. It has been promoted locally as a key technology for winter and spring orchard management. After the closed apple orchard applied the integrated technique of large modification, density reduction, and strong branching, the tree structure tended to be standardized and reasonable, the ventilation and light transmission conditions improved significantly, the light transmittance increased from 11.3% to 23.1%, and the proportion of branches was appropriate. The proportion of long, medium and short branches changed from 37:23:40 to 10:25:65. The average louver weight increased from 71 grams to 89 grams, an increase of 25.4%; flowering ability was enhanced, and flower buds were of high quality; the annual size was gradually eliminated; the number of individual plants increased from 217 to 778, an increase of 258.5%. The fruit quality and yield have been greatly improved, the fruit shape index has increased by 0.02, the single fruit weight has been increased from 215.5 g to 232 g and increased by 16.5 g. The fruit sugar content and hardness have also increased slightly, and the excellent fruit rate has increased from 55%. To 83%.
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