First, early spring temperature control
In early spring, the greenhouse temperature must be reduced by covering the grass tightly and adding ice walls, so that the flowering period of peach trees can be delayed by 15~45 days. In severe cold in winter, a square basket lined with plastic is placed against the back wall of the greenhouse for natural freezing, which is about 1.5m high and 70cm wide. When the temperature rises from March to May, the ice wall can keep the greenhouse temperature below 7℃ for about 50 days while absorbing the surrounding heat. After early May, the indoor ice gradually melted and the temperature rose. When the average temperature of the day is 8℃, peach trees can germinate, and when it reaches 9℃, peach trees are in the bud state. At this time, the grass stems are uncovered, making them blossom and bear fruit in the open field.
Second, the temperature control after autumn
After the "beginning of autumn", the weather gradually turned cold, so it is necessary to buckle the film early to protect the growing peaches. Film mulching shall not exceed September at the latest, and grass mulching shall not exceed September 10 at the latest, so as to prevent false ripening of fruits before they are ripe due to the temperature drop. After sticking the film, it is necessary to guard against high temperature. The maximum temperature during the day shall not exceed 30℃, and the minimum temperature at night shall not be lower than 10℃. After entering 1 1, we should also pay attention to setting up the stove to increase the temperature, otherwise the temperature in the greenhouse will drop below 5℃ in extremely cold weather. In order to create a dormant environment for fallen leaves, the trees should be allowed to sleep slowly after picking, and the optimum temperature is 6~-6℃. In cold winter, the temperature of peach trees in greenhouse should not be lower than-10℃. When the temperature is extremely low, the cover can be left uncovered during the day, and the temperature should not exceed 7℃.
The management of peach trees is not only before it bears fruit, but more importantly, it has been picked in large quantities after the fruit is completed. At this time, there are few fruits on the peach trees in the orchard, but the management of this period is very critical. Because after picking peaches, it still has a long growing period.
Because peaches mature in summer, it is very important to grow after all peaches bear fruit and before autumn.
Therefore, the quality of management in this period will directly affect how many fruits this peach tree can bear next year. Therefore, the management of peach trees after picking must not be relaxed, and it is more important to implement relevant technical measures to better manage them.
1. Spray insecticide
After picking the fruit, the weather temperature is relatively high during this time. Moreover, with the arrival of autumn, the humidity gradually increases, which leads to this period becoming the best growth period of insects, leading to many fruit trees starting to grow insects.
Therefore, it is necessary to spray the corresponding insect repellent when managing, especially if there are vegetable gardens or cornfields around, which will attract more insects. This will cause these insects to lay eggs on peach trees and overwinter, which will have a great impact on the growth of peach trees. Therefore, it must be thoroughly shared when spraying drugs to ensure that these insects will not affect the growth of fruit trees on trees.
2. Scientific fertilization
After picking fruits, the whole orchard should be fertilized. Moreover, after the peach picking is completed, the fruit trees have consumed a lot of nutrients. At this time, more nutrients are needed to grow better and bear better fruits, so fertilization management is particularly critical at this time.
Pruning and remodeling
The branches of peach trees grow intestines many times a year, so it is easy to have lush branches. This will lead to poor light transmission and affect the normal formation of milk buds. So after picking the fruit trees, cut off all the useless branches.
Preventing them from blocking light also helps those useful branches absorb more nutrients. Because after disintegration, it can be found that the remaining branches can absorb more nutrients.