Ice grapes, also known as Vidale, are a member of the white grape variety. It matures slowly but steadily, has a thick skin, is easy to propagate, and has a lot of juice, making it ideal for noble rot or icewine. Below, let's take a closer look at the cultivation process of ice grapes.
Before the grapes are planted, deep trenches are dug in the selected land. The groove is wedge-shaped, up to 140 170 cm deep, 80 130 cm wide on the upper edge and 40 80 cm wide on the lower edge.
After the planting ditch is excavated, fill the trench with organic matter, such as plant straw and animal manure.
The grapes are planted in a greenhouse with paper bags to protect the vines from the external environment.
Build a trellis for the grapes, with double rows of trellis and tilt 30 to 45 degrees to the outside to allow the vines to grow in the sun.
The microcomputer-controlled drip irrigation technology is used to irrigate the grape roots directly to ensure that the water required for grape growth is sufficient**.
In the field management process of grapes, plant straw, animal manure and microbial additives are used as the main raw materials to achieve a phosphorus content of 20 30 and a potassium content of 30 40 compared with the conventional, so as to provide sufficient nutrients for the grapes.
When the grapes are ripe, they are not harvested, but allowed to continue to grow on the vines. The change in temperature is used to freeze the grapes at -7 -15 and then thaw at 2 4 to make the grapes "freeze-thaw" and carry out natural dehydration. As a result, ice grapes develop a unique texture and flavor.