Do a good job in the spring management of cherry in greenhouse. What should we pay attention to when planting cherry in greenhouse in spring?

After the rain, a spring rain turned green. No matter whether they break through the ground or are in bud, as long as the old man pulls open the curtain of spring, they will show their magical vitality in their own unique way. Spring is the season that breeds life, and it is also the season full of vitality. Here, I appeal to all fruit farmers in Sanqin to let go of their helplessness, not to sleep in the shadow of "epidemic situation", and to actively participate in the main battlefield of orchard spring management on the premise of grasping the prevention and control of epidemic situation. Cherry is known as "the first branch of spring fruit". Spring comes back to the earth, and it is spring to raise your hand. It embraces hope and gives birth to spring at your fingertips. So today, let's take a look at the spring management of cherry in greenhouse. What should we pay attention to when planting cherry in greenhouse in spring?

1. Control the temperature and humidity in the shed

The optimum temperature for flowering period is 15℃, generally 18-2℃ during the day, not higher than 23℃, and above 5℃ at night. The soil humidity in the shed should be kept at 6-8%, and the air relative humidity should be 5-6%. The temperature in the shed changes greatly in one day. When the temperature in the shed is low in the morning, the shed can be opened at 7-8 o'clock to increase the temperature, and the outdoor air should be released in time before 9 o'clock to avoid burning the flower organs at noon. Close the greenhouse and cover it with insulation quilt before 4 pm to keep the greenhouse temperature as high as possible. During this period, it is necessary to check the weather forecast in advance. If the temperature in the shed is lower than 5℃, it is necessary to prevent freezing injury by artificial heating methods, such as heating lamps and burning coal. Reflective films can be laid in orchards with excessive air humidity. On the one hand, it can keep soil moisture and control the humidity in the shed, on the other hand, it can reflect light and improve the light intensity.

2. Sprinkle spring water and bactericide in time.

It is easy to avoid the dry season in spring. If there is less rain and snow in winter and the drought is severe, it is suggested to combine fertilization with watering the orchard once. Watering the water before flowering once every two months can not only alleviate the drought, but also reduce the ground temperature, which is conducive to delaying the flowering time of fruit trees. Spraying sulfur mixture in time to sterilize the tree. By "painting white", the absorption of solar ultraviolet rays by trees can also be better reduced, and the excessive temperature rise of trees can be delayed, so that the flowering time can be delayed, and the fruit trees in full bloom can be in a more suitable pollination temperature environment, thereby improving the fruit setting rate. Greenhouse planting also needs to do a good job of fertilizer and water management.

3. Pruning treatment

Big cherry should be pruned properly from late February to mid-March in spring. For young trees, it is mainly to prune the overgrown long branches of the main branches, and also to prune the upright main branches of the middle branches, and the remaining main branches and lateral branches should be boiled at night for opening angle and budding. For the trees at the initial fruit stage, it is necessary to trim the low branches and dense branches, retract the main branches without branches and extend the branches, and retract or short-cut the weak lateral branches. For the trees in full fruit period, it is necessary to trim and adjust the structure of the trees, and pruning can be carried out for the backbone branches and fruiting branches.