Now is the season when a large number of cherries are on the market, especially greenhouse cherries. After late summer, the cherries will be mostly picked. Many farmers think there is no need to pay attention to cherry management now, but this is not the case. At this time, summer pruning and fertilizer and water management of greenhouse cherries must be done well, otherwise it will have a great impact on the growth of cherries next year. So how do you manage greenhouse cherries in the summer?
Summer pruning management of greenhouse cherries
Summer pruning of greenhouse cherries is usually done during film removal, mainly for crowning and high-intensity pruning.
1. Retraction method: This method can reduce the total crown width of each cherry tree by 50~80cm, preventing the tree from becoming taller and affecting indoor ventilation and light transmission conditions.
2. Cutting thinning: This method mainly cuts strong main branches and medium-sized main branches in the middle, retracts them to the middle or back branches, and then cultivates and develops into main branches.
3. Thin branch pruning method: Mainly by carefully pruning the main branch and various branches on the main branch, sparse and dense chicken claw branches, vertical branches, overlapping branches and surrounding competing branches. Cut off medium-long branches on short sections and retain straight and sloping middle branches.
4. Strengthen the cultivation of new branches: After extensive pruning, trees will stimulate many new buds and branches. If the location is suitable, pay attention to cultivating new main branches or fruit branches. If it is not suitable, the sprouts and interlayers should be removed in time.
Fertilizer and water management of greenhouse cherries
1. Top dressing and watering
Fertilizer should be applied in time after film removal. Between each row and two plants, a fertilizer trench should be dug 30 cm deep, 30 cm wide from north to south, and 100 cm long from east to west. Apply 250-300g of nitrogen, phosphorus and potassium compound fertilizer in each ditch. After sealing the soil, it should be restored to the high ridge and covered with plastic film. The film should cover the soil and seal the soil. In order to reduce the number of tree roots and control tree expansion, the exposed tree roots must be cut off after excavation, renewal, and root shrinkage.
When digging a trench, be careful not to shovel the agricultural film to the bottom of the trench. When fertilizing, water should be poured once. The second fertilization will be carried out in mid-to-late September. Dig a fertilizer trench on the other side of the planting line.
2. Fertilization outside the roots
After removing the film and cutting into pieces, combined with pest control, spray 2116 0.7 brown sugar 0.3 urea solution 1000 times with a special fruit-shaped liquid every 7-15 days. 3-4 times each time. After the end of June, 0.4 potassium dihydrogen phosphate solution, 0.7 brown sugar solution, and 0.3 urea solution are used alternately, once every 7-10 days, and used 3-4 times continuously.
3. Spraying paclobutrazol can inhibit the growth of branches and promote the growth of buds. Starting from July in summer, cherry trees can be sprayed with paclobutrazol 200-300 times every 10-15 days, and sprayed 1-3 times continuously to inhibit the growth of new buds and promote flower bud differentiation.
4. Drainage in furrows
Cherry trees are afraid of water. Once there is water in the ground, the tree will die of water in about 24 hours. Therefore, after removing the film, high ridges should still be formed and covered with plastic film to prevent water accumulation. Pay attention to timely drainage when it rains, and it is strictly forbidden to accumulate water in the shed.
The above are the key points of cherry management in summer greenhouses. The cutter work of greenhouse cherries in summer is very important and must be scientifically managed. Attention should also be paid to fertilizer and water work. I hope the above content can be helpful to cherry growers. .