Winter pruning of chestnut trees in winter should be arranged from mid-December to January of the following year. For chestnut trees that have entered the full fruit period, diseased insects, overlapping branches, vernal branches, Cross branches, dry branches, thin branches, drooping branches, etc. are all cut off to improve the ventilation and light transmission conditions in the canopy, and at the same time, it is beneficial to concentrate nutrients and make the branch tips thick and full. The top branch and the extended branch of the backbone branch should be kept 50 cm for short-cut treatment, and the side branches should be promoted to increase the number of fruiting mother branches. At the same time, it is necessary to keep a part of the long branch in the crown or the middle and lower part of the large branch and cultivate it into a fruiting female branch. The fruiting female branch that has grown too much should be appropriately shortened to promote the lower part to shed new branches.
The pest control mainly kills chestnut tree weevil, and cleans up the damaged chestnut fruits and spiny bract shells in the orchard in clear garden; removes dead leaves, residue waste and pruned shoots out of the garden and burns them intensively.
When scraping the skin, the underside of the trunk should be covered with plastic. Use a sharp knife to scrape the rough skin, old skin, and warped skin, and take it outside the park to burn it. After scraping the skin, brush the trunk and large branches with white agent in time to prevent pests or germs from infecting the trunk.
Chestnut trees are susceptible to freezing damage in freezing winter, which is very detrimental to the wintering of the tree. Tree tray loosening and mulching should be carried out to improve the cold resistance of the tree and make it safe for winter.
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2022 New Laser Distance Sensor
At the start of 2022, JRT introduce our customers a batch of new series laser distance measurer sensor(S92-20m, S91, BA6A-150m, BA6A-20Hz, M703A-8Hz, U81-10m etc.). Especially S91(RS485 interface and software Rx Tx protocol) and S92(RS232 interface) ip54 enclosure distance sensor model, custoemrs would like to use it in their industrial automation solutions,according to the ip54 waterproof protection level, well protect laser, Wide Voltage 5~32V(Optimize for industrial using), and easy-to-install.
If you are interested in JRT more laser measuring sensors, or you would like buy qty 2 quotation for trial basis, please welcome to contact us.
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JRT Team
Chengdu JRT Main Ranging Modules: Industrial Laser Distance Sensors, Laser Rangefinder Sensor , Tof LiDAR Sensors.
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