Antifreezing Measures in Winter and Spring
1. Freeze-proof irrigation water
Irrigation of frost-proof water before winter and return to green water in
spring are beneficial to improve the water status of trees and buffer the
changes of temperature difference and air humidity in orchards caused by sudden
climate changes in winter and spring.
2. Whitening
Salt lime emulsion was prepared with salt 1 kg + quicklime 3.5-5 kg + water
45 kg to whiten the trunk, reduce the absorption of solar energy and delay tree
germination.
3. Spraying
Spraying 0.25%-0.5% Naphthalene Acetate Potassium Salt solution on the
branches before germination inhibited flower bud germination and improved cold
resistance.
Spraying 0.3%-0.6% potassium dihydrogen phosphate solution on germinating
fruit trees before the cold of late spring and the coming of late frost can
enhance the cold resistance of stamens.
4. Antifreeze Fluid for Tree Coating
A protective film (such as carboxylic methyl cellulose) was coated on the
surface of trees to reduce water loss.
5. Plastic film mulching
Before or after the winter or Spring Festival, covering 1-2 square meters of
plastic film around the tree disc with soil to bury the film tightly can reduce
root water evaporation and increase soil temperature.
6. Windbreak
Before winter, an arc-shaped windbreak wall 1-1.5 m long was built at the
windward side of the tree body 0.5 m away from the tree cadres to reduce the
damage of the cold wind to the roots.
7. Covering the whole garden with plastic film
The whole garden is covered with plastic film after clearing the garden,
which can not only prevent freezing, conserve moisture, promote early growth of
trees and control weeds, but also improve the yield of fruit trees and go to
market early.
8. Ignition of orchards antifrost candles
If you manage an orchard in cold weather, you need to be prepared for this
difficult task. You need to buy enough orchards antifrost candles in advance.
Orchard managers usually choose to order orchards antifrost candles around
October and receive it just in time for the cold.
