Overwintering antifreezing agent for stevia rebaudiana stubbles

Abstract

The invention provides an overwintering antifreezing agent for stevia rebaudiana stubbles. The overwintering antifreezing agent contains the following components in parts by weight: 15-20 parts of urea, 20-25 parts of lime powder, 3-5 parts of Twain, 4-6 parts of hydroxymethyl cellulose, 3-5 parts of polyving akohol, 15-20 parts of glucose, 5-7 parts of glycerin, 6-8 parts of ethanol, 4-6 parts of amino acid, 3-5 parts of salicylic acid, 2-4 parts of calcium alginate and 1000 parts of water, wherein the components are dissolved and mixed to form the overwintering antifreezing agent. According to the overwintering antifreezing agent for the stevia rebaudiana stubbles, an antifreezing protecting film can be formed on the surface of stevia rebaudiana, so that the antifreezing capacity of the stevia rebaudiana is effectively improved, and the cold resistance of the stevia rebaudiana is improved; and the overwintering antifreezing agent can be directly sprayed to the surfaces of plant leaves, and a use method is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of stevia planting, in particular to an antifreeze agent for stevia root stubble overwintering. Background technique [0002] Stevia is a perennial herb of the genus Stevia in the Asteraceae family. The whole Stevia plant contains sugar, and the sweetness of the leaves is the highest, containing about 14% glycosides. The glycosides of the branches are equivalent to half of the leaves. Stevia leaves can be used as sugar after drying and crushing, or through ethanol precipitation Obtain stevioside, the sweetness is equivalent to 250-300 times that of white sugar, and the calories are only 1 / 300 of white sugar. Not only that, stevioside has no toxic side effects, no carcinogens, safe to eat, regular consumption can prevent high blood pressure , diabetes, obesity, heart disease, dental caries and other diseases, it is an ideal sweetener to replace sucrose. At present, it has been widely used in food, beverage,...

AI Technical Summary

Problems solved by technology

[0003] Stevia is a temperature-loving plant with poor cold resistance. In the cold winter, if antifreeze measures are not taken to keep warm, it is easy to be frozen to death, which will lead to a decrease in the germination rate of the next year and affect the economic benefits of Stevia.

At present, the overwintering method of covering straw or greenhouses for heat preservation is adopted. Although covering straw is simple and convenient, it needs to be covered to 10-20cm to have the effect of heat preservation and cold prevention. The material consumption is large, and if it encounters rain and snow, it will cause serious damage to stevia. ;It is necessary to control the temperature of the greenhouse when using greenhouse insulation, and the greenhouse cannot be removed directly to avoid stevia's inadaptability to the external temperature