Studies On Pruning And Fruiting Tree Structure Of Blueberry In Summer

In this study,the main southern high-bush cultivars,‘Misty',‘O'Neal'and‘Legacy' planted in the blueberry base of Suizhou city,Hubei province were used as test materials.The pruning reaction was studied by pruning the cane branches at different heights in different periods of summer.The conclusions are as follows: 1.In the first summer of the planting of Misty,the main blueberry cultivar in Suizhou,the basal shoots with different height were plucked and pruned.50-60 cm length of basal shoots were plucked in order to form more shoot branches and more flower buds.In a bush,the number of basal branches reached up to 4.60,with an average of 3.6 new shoots per basal branch.Each new shoot could form 10.66 flower buds,with an average of 4.55 fruits per flower bud.The final yield per mu was about 226 kg.2.In the second year of planting,pruning was carried out at different periods of summer and at different heights of basal branches.The number of basal shoots and the growth of new shoots had obvious advantages when picking at 60-70 cm in June,which could be used as the preferred pruning height.At this time,the total length and diameter of new branches was the highest.In July,picking at 50-60 cm height and 60-70 cm basal shoot length can form more and better shoots and plump buds.In August,the performance of 80-90 cm treatment was better than that of other treatments,but the overall performance was a decline in growth.3.The treatments of different varieties and basal branches with different heights in July showed that the optimal pruning height for Misty was under 60-70 cm,O'Neal under 60-70 cm,Legacy between 50-60 cm,so Misty and O'Neal could take 60-70 cm as the height of picking,because the coarseness and number of flower buds were the highest at this height.The height of picking can be 50-60 cm for Legacy.Under this height,its growth index was the highest.