Treatment method applicable to delayed harvesting of ice grapes in northeast China

Abstract

The invention relates to a treatment method applicable to delayed harvesting of ice grapes in northeast China. The method comprises the steps that before fruiting branches are separated from main vines, boric acid, monopotassium phosphate and praline are sprayed on grape leaves, and the grapes are watered thoroughly once in the last ten-day period of September; in mid-to-late October, after the grape leaves wither completely for 8-10 days, the fruiting branches are sheared from the main vines, the two ends of each fruiting branch are respectively sleeved with a plastic bag, and grape berries can not be sleeved with bags; the fruiting branches sleeved with the bags are hung on grape trellises, the main vines are taken down from the grape trellises and laid on the ground for covering soil and conducting overwintering protection; the grape berries are aired according to changes of natural lighting and temperature; in the middle ten days of December, when the highest temperature is minus 8 DEG C and the lowest temperature is minus 18 DEG C, the grape berries are stabilized for 24-48 hours, and the grape berries on the fruiting branches are collected. By the adoption of the method, the harvesting time can be prolonged, the requirements of icewine brewing for quality of the grape berries are met, and the fruiting main vines can be protected to overwinter successfully.

Description

technical field [0001] The invention relates to a processing method for harvesting ice grapes, in particular to a processing method suitable for ice grapes used in brewing ice wine as a raw material in Northeast China before and after harvesting. By using the technology of the invention, the quality of raw materials for brewing ice wine can be satisfied. Requirements, but also to protect the purpose of the grape main vine smooth overwintering. Background technique [0002] The brewing of ice wine is a laborious and expensive process. Due to the high sugar content of the grapes used to make ice wine, the fermentation of ice wine can take several months to complete, which is longer than the time required for ordinary wine There are many, and because ice wine is different from other wines in terms of different freezing methods and brewing process conditions during brewing, it has a unique flavor, which is different from other wines. Drinking wine at home and abroad has become ...

AI Technical Summary

Problems solved by technology

Although this approach can meet the requirements, a new main vine must be cultivated every year with the vine root tiller, and this newly cultivated vegetative main vine will be transformed into a fruiting main vine. The diameter of the main vine must meet a certain standard to meet the requirements for flowering and fruiting. Requirements, it takes a long time to cultivate a new vegetative main vine by using the root tiller of the plant, and consumes a lot of nutrients. And the quality declines, and at the same time, because the cultivation of a new main vine needs to increase the application of a large amount of fertilizer and water supplement, the management cost increases and the cost increases; and the grape main vine generally can reach the full fruit period more than 3 years, the above method makes Each main vine is frozen to death within 2 years, causing the vines to fail to reach the full fruiting period, which seriously affects the grape yield