Hello everyone, I'm Xiaojun. Today we are going to talk about one of the most important tasks in the management of citrus orchards - garden cleaning. As an evergreen fruit tree, citrus has a long growth period and is susceptible to various pests and diseases. If we only rely on seeing diseases and insects before applying pesticides, it will not only increase the cost of drugs, but also may lead to the enhancement of pesticide resistance and the reduction of natural enemies. Therefore, it is very necessary to do a good job in clearing the garden.
With the passage of time and the change of seasons, our Pujiang rake mandarin oranges have also begun to enter the harvest period one after another. For the orchards after harvesting, we should seize the favorable weather and clean the orchards in time to reduce the pressure on the pest base throughout the year.
1. Clearing time
Citrus orchards are divided into two stages: winter orchards and spring orchards. Winter garden cleaning is generally carried out after winter pruning, and the main purpose is to destroy the overwintering sites of pests and diseases and eliminate overwintering pests and diseases. Spring clearing is carried out before the budding of citrus, and the main purpose is to prevent the recurrence of pests and diseases and reduce the impact on citrus budding. These two clearing plays an extremely important role in citrus management, and doing a good job in these two stages of clearing can get twice the result with half the effort.
Second, the significance of Qingyuan
The main role of orchard cleaning in citrus orchard management is to eliminate pests and diseases in the bud, so as to reduce the cost of medication and the difficulty of management. These include:
Reducing the base number of overwintering insects:
Eliminate overwintering adults, eggs, and pupae to prevent the recurrence of pests such as red spiders, aphids, and psyllids after overwintering.
Elimination of the causative agent of the disease:
Clean up the diseased spots and diseased clumps on the dead branches and leaves, and pay special attention to the source of a series of diseases such as sand skin disease, canker disease, and scab disease, so as to reduce the risk of disease transmission.
Reduce the difficulty of management in the coming year:
The groundwork of clearing the orchard will help reduce the difficulty of medication and management in the coming year, and lay a solid foundation for a good yield in the orchard.
Third, the key points of the garden
Restore tree potential:
At the end of fruit harvesting, a large amount of nutrients are taken away from the fruit tree, which can easily lead to the weakening of the tree. Therefore, it is necessary to carry out orchard restoration work and replenish nutrients in time to restore tree potential as soon as possible and avoid leaf yellowing.
Clean Pruning:
Pruning is carried out when it is sunny, dry, and cold, and the main object is the harvested trees. Pay attention to pruning diseased and insect branches, dead branches in the inner chamber, weak branches, etc., and burn them intensively. Remove overwintering sites from pests and diseases and keep orchards tidy.
Medium-plowed pine soil:
In winter, the soil is loosened by cultivating once to improve soil permeability, increase soil oxygen content, accelerate soil nutrient transformation, and enhance soil heat preservation, moisture retention, drought resistance and frost prevention ability.
Pharmaceutical prevention and control:
After fertilizing and pruning, choosing a sunny day with weak wind or no wind to clear the garden can help to reduce the base of insect population and reduce the amount of occurrence in the later stage.
Clearing is essential for the healthy development of citrus orchards. It is hoped that these methods and meanings of clearing the orchard will be helpful to citrus orchard managers. If you find it useful, please share it with your family and friends to help more people. See you next time!