Safe overwintering Management must be done in High-yield cultivation of Grape

Grape planting

To do a good job in the management of grape safe overwintering is a necessary technology for high-yield grape cultivation. Here are several management measures suitable for Laizhou area.

The main results are as follows: 1. Winter pruning is carried out before overwintering to reduce the water evaporation of winter branches. Water should be irrigated once in order to maintain the weak activity of roots in winter. During the overwintering period, it must be checked once every semimonthly. If the soil is found to be dry, it should be watered in time, and ice and snow weather should be avoided when watering, so as not to damage the roots if the water temperature is too low.

2. Clear the garden. After pruning, the pruned vines should be cleaned thoroughly, and the leaves on the vines must be cleaned up. Otherwise, the leaves and vines are buried together, due to the decay of the leaves can cause vine rot, affecting the yield of grapes next year.

3. Topdressing. In order to ensure the robust growth of plants in the coming year, some mature organic fertilizers can be applied in combination with winter shearing. Note that the amount of fertilizer used should not be too much, and the basic fertilizer should not come into direct contact with the grape roots.

4. Cold protection and heat preservation management. Maintain the soil temperature and promote the rapid growth of its roots.

The main results are as follows: (1) binding covering cold protection method. Tie the pruned grape vines into bundles, wrap them with 1-2 layers of grass curtains or gunny sacks, then cover sawdust 15-20 cm thick, then cover with a layer of plastic film, and compacted with soil around the film.

(2) the four-layer cold protection method of sand, film, leaf and straw. That is, first cover the sand 20 cm thick on the branches, cover a layer of plastic film on the sand, spread a layer of corn leaves of about 10 cm on the plastic film, and press the corn straw 60 cm thick on the leaves, which has the effect of sand vines, film moisturizing, leaf densification and straw warmth. Among them, the first three layers should be covered in the near future. The latter layer is carried out after freezing.

(3) Hollow cold protection method. Make a groove with bricks and adobe in the ditch, tie the winter-cut branches and vines in the middle, build a shed with wooden poles, put straw and straw bags, covering 20-30 cm; then cover 50 cm of leaves or firewood, leaving a few ventilation holes along the ground, which can be measured and ventilated at any time; closed at 0 ℃ and opened at Qingming Festival the following year.

(4) the method of cold protection with plastic film. With the continuous improvement of cold protection technology, the cold protection method covered with plastic film has appeared in recent years. For the tree shape of Dulong vine, it is also necessary to plate up the grape branches and flatten the raised branches so as not to pierce the plastic film. After the plate is laid flat, press it slightly with soil, then cover it with a black plastic film with a width of 1.4 meters and 0.07 millimeters, and compact the film around with soil.