[Effects of different pruning modes on the light distribution characters and fruit yield and quality in densely planted 'Red Fuji' apple orchard].
This paper studied the effects of different pruning modes on the light distribution at different positions of canopy and the fruit yield and quality in different layers in a densely planted 'Red Fuji' apple orchard. Comparing with no pruning, both light and heavy pruning improved the light distribution in the canopy. Under light pruning, the canopy volume with a relative light intensity less than 30% occupied 14. 6% of the total, and that with a relative light intensity more than 80% accounted for 11.2%. Under heavy pruning, the two values were 12.8% and 28.8%, respectively. The fruit yield under light pruning increased in the first year, but that under heavy pruning decreased, with the fruit quality being both improved. The mean fruit mass, firmness, and soluble solid matter content decreased in the order of light pruning > heavy pruning > no pruning, the titratable acid content was in adverse, and the anthocyanin content was in the order of heavy pruning > light pruning > no pruning. From the viewpoint of fruit yield and quality, light pruning was the best modification mode for densely planted orchards.
Song
Kai
K
State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China. songkai1228@126.com
Wei
Qin-ping
QP
Yue
Yu-ling
YL
Wang
Xiao-wei
XW
Zhang
Ji-xiang
JX
D000383:Agriculture / Q000379:methods*; D018533:Biomass; D002681:China; D027845:Malus / Q000254:growth & development*; D011786:Quality Control; D013472:Sunlight