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Coverage time. Every winter, when strawberries are subjected to several frost-cryogenic exercises, the coverage is most suitable when the soil temperature drops to -7°C and the soil is “frozen overnightâ€. Generally held during November.
Coverage method. Coverage time. Before the covering of the cold-proof materials, the anti-freezing water should be poured once. It must be filled thoroughly. Irrigation takes place during the period when the soil is about to enter the freezing period and the ground is covered one week after the irrigation. 2. Cover material. A variety of crop stalks, leaves, soft grass, decomposed horse manure, fine rags, etc. can be used. If the soil is covered with cold, it is best to coat a small amount of grass first, and then cover the soil so as to avoid damage to the strawberry seedlings when the soil is removed during spring. The thickness of the covering depends on the local climatic conditions and the insulation properties of the covering material. The general thickness is 3 to 5 cm. 3. Coverage method. Covering is best done in two separate steps. After pouring the frozen water, it is slightly dry and covered with a part of material. After a few days, the temperature will no longer rise and it will be completely covered. 4. Set wind barriers to prevent cold. In the densely planted strawberry garden where snow is stable, wind barriers can be set up to prevent cold without ground cover. Wind barriers are set every 10 to 15 meters, with sorghum stalks, corn stalks, straw mats and other materials. Barrier height 2 to 2.5 meters. Conditional available cold-proof cloth, color steel tile and other materials around the park set up wind barriers, the effect is also very good. 5. Remove cover period. It is generally performed twice in the spring after the chilling season in the following year. The first time when the average temperature is above 0°C, remove the thawed cover. In the case of excessive rain and snow in winter, it must be promptly removed to promote the thawing of the lower layer, which is conducive to sunlight and increase the temperature of the ground. The second time when the strawberry is about to germinate, do not remove the cold protection too late so as not to damage the new stem. 6. Using plastic film cover. After the strawberry is poured into the frozen water with a plastic film, the surface of the surface is covered by the direction of the earthworm when the surface is slightly dry. When the film is covered, the film must be stretched and laid out so that the film is tightly adhered to the surface of the dough. The soil around the film is tightly packed with soil. The middle is then covered with a small mound to prevent the wind from blowing through the film and then covering the cover. Or in areas with snow, direct covering of 10 cm thick wheat straw, thatch, straw and other materials on the strawberries and then covering the plastic film is better than covering the plastic film before covering the cover.
Strawberry winter should cover insulation
After late autumn, strawberries gradually enter a dormant period. Strawberry roots are shallow, and winter can only tolerate low temperatures of -8°C and temperatures of -10°C for a short time. Freezing damage can occur when the temperature drops again. In severe cases, the plants die and the economic benefits decrease. The winter cold-proof measures for strawberry cultivation in winter are mainly covered by insulation. Overwintering and protecting the winter cover will help the growth of strawberries. However, if the effect of covering cold is not good, the performance will be late, the growth will be weak, and the yield will be significantly reduced.