Top 10 antifreeze methods of fruit tree
When the temperature is below the limit that they can tolerate, the fruit
trees will suffer from freezing damage. Therefore, antifreeze is an important
task in the winter management of fruit trees. The top ten antifreeze methods for
fruit trees are as follows:
1. Fertilize the tree
Early application of base fertilizer is one of the key measures to prevent
frost and increase fruit trees. It can nourish and strengthen trees and enhance
the ability of fruit trees to resist cold. Therefore, special attention should
be paid to the application of base fertilizer in orchard. It is important to
promote early root application and deep application to promote root absorption,
prolong leaf photosynthetic life, increase photosynthesis and increase nutrient
reserves. The base fertilizer should be based on the fermented farmyard manure
(organic fertilizer), combined with the application of quick-acting fertilizers
such as nitrogen, phosphorus and potassium. The artificial fertilizer or
artificial application of the granular fertilizer is suitable for artificial or
2. Irrigation before freezing
The principle of releasing a large amount of latent heat when using water to
cool down is to immerse the orchard once in the soil before freezing and
freezing, which is beneficial to water storage and waterlogging, calming the
ground temperature, preventing frost damage of fruit trees and reducing the
source of overwintering insects. The amount of winter irrigation should be such
that all water is infiltrated and saturated with the root distribution layer
(40-60 cm) on the day of irrigation. After irrigation, the soil moisture is
maintained at 60% to 85% of the maximum water holding capacity in the field.
3. The trunk is painted white
Before entering the winter, use the whitening agent to evenly whiten the
trunk and main branches of the fruit tree to prevent freezing and sunburn, and
to kill germs, eggs and adults hidden in the trunk. The preparation method of
the whitening agent is 10 parts of quicklime, 1 part of sulfur powder, 1 part of
salt, 0.1 part of vegetable oil, and 20 parts of water. It is advisable to
prepare the whitening agent to be dry and moderate, so that it is not suitable
for spraying. When applying the brush, it should be meticulous and thoughtful,
so that the whitening agent can penetrate into the skin seam, especially the
diseased branches, bark seams and branches should be painted.
4. Surface coverage
Covering the rows of fruit trees with straw, wheat straw, hay grass, corn
stalks, etc., it can block the cold wind from invading the root neck, and can
also reduce the evaporation of soil moisture, and play a role in protecting and
warming. When covering, the straw and other coverings should be cut into small
sections of 15-20 cm long, covered evenly and covered with a layer of soil to
prevent the wind from being blown away. For 1-3 year old saplings, the mulch of
1 m square can also be covered in the tree tray before the frost, which can
maintain the soil temperature and humidity.
5. Buried in the cold
Before the soil is frozen in the north, the young trees can be directly
pressed and buried with fine tidal soil. The thickness of the cover is 15-20 cm.
Note that when the soil is buried, the surface layer of the soil should be
smooth and tight, and the wind will not leak. For large trees that cannot be
buried, they can be soiled at the root neck, with a thickness of 20-30 cm, and
removed in the coming year. Do not remove the soil from the tree tray to prevent
the roots from being exposed to frost.
6. Tree package
In the case of trees with poor cold resistance planted in the front and back
of the house and in the courtyard, the trunk or main branch can be wrapped with
the grass or grass rope before the arrival of the large freezing, which can
prevent the cold wind from invading and reduce the water content of the trunk.
Loss. Before winding, it is best to soak the entangled material in lime water
for 1-2 days to disinfect and prevent the pests from invading the fruit trees.
In the coming spring, the grass will be burned in a concentrated manner to
eliminate the wintering pests and diseases.
7. Crown cover
For southern evergreen fruit trees, especially saplings, the canopy can be
covered with a non-woven fabric, plastic film or shade net before the cold wave
comes. The lower part is tied with a rope or buried in the root soil, and it can
also prevent freezing. The role. When the cold wave turns fine, the cover can be
uncovered when the temperature is above 5 °C during the day, and the frost is
covered at night.
8. Set the wind barrier
Use shelter forests to improve the microclimate of the orchard, reduce the
wind speed, inhibit the drought, reduce the freezing damage, and create a
shelterbelt to adopt the combination of arbor and irrigation. The evergreen tree
is the most ideal. If there is no windbreak, you can use a branch or hay to
construct a windproof fence or windshield about 1 meter high on the northwest
side of the orchard to protect the root neck from freezing. For small-area young
orchards, windshield can be set up with sorghum and corn stalks every 2-3 rows
9. Spray water or lime
Before the arrival of strong cold air, continuous water spray or fruit tree
antifreeze on the orchard can effectively alleviate the sudden drop of the
orchard temperature or mediate the cell membrane permeability, and can better
prevent frost. In the evening after the snow, the grainy quicklime per acre is
50-100 kg. Quicklime can increase the temperature in the garden by decomposing
the emitted gas and reduce the harm of radiation cooling.
10. Set antifreeze candles
Anti-freeze wax should be used in the coldest night in winter, and it will be
ignited around 12 o'clock in the evening. Pay attention to controlling the fire
and stop it when it is dawn in the morning. The orchard antifreeze candles we
produce will burn for more than 8 hours. In other words, you don't have to get
up at night to watch if the flames are extinguished. This will ensure that you
have a good night's sleep. Most people choose against spring frost candles for
the orchard in the winter. What are you waiting for?