Phenomena in greenhouses must go through a certain period of low temperature to meet their demand for cooling before they can warm up to release dormancy. Peach trees grown in greenhouses must be artificially forced to sleep so that peaches can undergo normal physiological changes after a series of low-temperature exercises to germinate, grow, bloom, and produce results.
Management during warming I. Pest control: When you start warming up, spray insecticide first to kill overwintering spider mites, aphids and other pests. Pay attention to uniform spraying. In the initial stage of germination, 3–5 Baume degree lime sulfur is sprayed to remove all germs.
Second, soil, fertilizer, water management: Fertilization and watering within 10 days after warming up. If you do not apply base fertilizer or base fertilizer is insufficient, you can apply organic fertilizer once after warming up, and then apply a small amount of compound fertilizer. After fertilizing, irrigate 1 large water, soak the ground, and treat 1 soil loose when the soil is slightly dry.
Third, cover the film: The purpose of covering the film is to increase the temperature.
Germination temperature and humidity management during the shed period 1. Temperature management: The temperature cannot be raised too quickly at the beginning. If the temperature rises too fast and the temperature is too high, it will cause the peach tree to sprout quickly and bloom quickly. The reversed phenomenon of the first bud and subsequent flower often occurs, so that the buds compete for the storage of nutrients preferentially, resulting in a reduced fruit setting rate and severely affecting the development of the young fruit. And swelling, resulting in early shedding of young fruit. The temperature rise is divided into 3 steps. The first step is to pull only 1/3 of the grasshoppers in the daytime and pull them one by two to keep the shelf temperature at 13°C-15°C during the day and 6°C-8°C at night. 2-3 days. The second step is to pull up 1/2 of the grasshoppers in the daytime and pull them one at a time. The temperature of the shed is maintained between 16°C and 18°C ​​during the day and 7°C-10°C during the night for 2-3 days. The third step is to pull up all the grasshoppers during the day. When the temperature is too high, open the top air outlet to cool the air, keep the shelf temperature at 20°C–23°C during the day and 7°C–10°C during the night.
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