Pruning raspberries is mainly divided into three times, the specific time is after the survival of seedlings, the vigorous growth period of tree tops and after fruit bearing. Pruning the seedlings after survival can maintain a good tree shape and promote the growth and development of branches and buds. The excess branches and diseased plants were thinned during the growth period of the tree tops to improve the photosynthetic efficiency. Cut off the fruited branches after fruit picking for the last time, and accumulate nutrients into the fruitless branches to improve the yield. 1、 When to prune raspberries 1. After the survival of saplings: after the survival of saplings, prune them for the first time. Trim the dense and damaged branches to maintain a good tree shape. When the new shoots grow to about 50cm, the plants with relatively small density can be removed from the plant heart, which can help them grow new branches and buds and increase the growth of branches and buds.
2. Treetop growth period: when the branches grow to about 1.4m, they can be cut for the second time. This pruning needs to cut off the excess part to ensure adequate nutrition supply.
3. After results: prune the raspberry for the last time after fruit picking. This pruning needs to cut off the mother branches of the fruit to avoid unnecessary nutrient consumption and focus the main nutrients on the branches that have not yet borne fruit. 2、 How to do fertilizer management for planting Prunus mume 1. Base fertilizer: the application of base fertilizer is generally carried out in early autumn, and the rotten farmyard fertilizer after full fermentation can be used. Before fertilization, ditch shall be opened, and then fertilization shall be carried out. After mixing with the soil, it shall be mixed and applied.
2. Topdressing: in the early stage of their growth, more nitrogen fertilizer can be applied to promote the growth and development of roots. In the flowering and fruiting stage, apply more phosphorus and potassium fertilizer to improve the efficiency of fertilization and pollination, so as to improve the fruit setting rate. （ShuMeiShenMeShiHouXiuJian）