To do a good job in safe winter management of grapes is a necessary technology for high-yielding cultivation of grapes. Now we introduce several management measures that are suitable for the Laizhou region:
1. Winter cuts are made before the grapes are overwinter to reduce evaporation of winter shoots. It is necessary to pour water once a day to maintain the water's need for weak activity in the roots in winter. During the wintering period, it must be checked once every half-month. If the soil is found to be dry, it must be watered in time, and ice and snow should be avoided when watering so as to avoid excessive water temperature.
2. Clear Garden. After trimming, the pruned leaves must be thoroughly cleaned. The leaves on the vine must be cleaned. Otherwise leaves and vines are buried together, and rot of the vines can be caused by rot of the leaves, affecting the yield of grapes in the next year.
3, top dressing. In order to ensure the robust growth of the plants in the coming year, it is possible to combine some of the decomposed organic fertilizers during winter cutting. Note that the amount of fertilizer used should not be too much, do not use direct contact with grape roots.
4, cold insulation management. Keeping the soil temperature promotes rapid root growth.
(1) Bundle cover cold protection method. The bundled grapevine vines are bundled into a bundle, and then 1-2 layers of straw or sackcloth are wrapped around the surface, and then 15-20 cm thick sawdust is covered. After the tamping, a layer of plastic film is covered and compacted with soil around the film.
(2) Four layers of sand, film, leaf, and straw are protected against cold. That is, first cover 20 cm thick on the vines, cover a layer of plastic film on the sand, lay a layer of 10 cm of corn leaves on the film, and apply 60 cm thick corn stalks on the leaves to provide sand, vines, and membranes for moisturizing. Leaf encryption, straw warm effect. The first three levels of coverage should be performed in the near future. The latter layer is performed after freezing.
(3) Hollow cold-proof method. In the ditch, bricks and adobe are used to form a trough, and the winter-cut twigs are bundled in the middle. The top is covered with wood poles, and the stalks and grass bags are covered to cover 20-30 cm; then the leaves or firewood are covered. 50 centimeters, along the ground to leave a few vents, can be measured at any temperature ventilation; closed at 0 °C, to be opened the next year when the Ching Ming.
(4) Plastic film cooling method. With the continuous improvement of cold-proof technology, in recent years there has been a cold-proof method covered with plastic film. For the single dragon-tree shape, it is also necessary to set up the grape branches and tilt the branches to avoid breaking the plastic film. . After the plate is flattened, press it slightly with soil, and then cover it with a 1.4 m wide, 0.07 mm thick black plastic film, compacted with soil around the membrane.
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