Seed treatment of Glycyrrhiza uralensis
Licorice seeds begin to germinate at 10-15 degrees, and germinate fastest at 15-20 degrees, and the germination rate of aged seeds decreases. One of the greatest characteristics of licorice is that it has a hard seed phenomenon, which is usually between 70 and 90 percent, and it is difficult to emerge after sowing. Therefore, when seeds are used for reproduction in production, treatment must be carried out before sowing. The general treatment methods are as follows:
⑴ soaked seeds in boiling water, ⑵ concentrated sulfuric acid soaked seeds, ⑶ broken glass grinding ⑷ rice milling machine grinding, in which rice milling machine grinding effect is the best, generally in a few days before sowing with rice milling machine grinding 1-2 times, see the seed can be scraped, must not break the seed coat, note that seed treatment must be carried out a few days before sowing, early treatment affects the germination rate, such as bought seeds have been treated, and do not know how long to deal with or surface mosquito phenomenon of the seeds had better not be used, because the germination rate is low.
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Treatment methods of licorice seeds
1. Sulfuric acid treatment. Stir the pure seeds with 20-30 milliliters of 80% sulfuric acid per kilogram. See that the seed coat has uniform marks of sulfuric acid etching, then rinse with clean water and dry for use. The time of seed treatment is related to the temperature and the amount of acid added. In the case of the same amount of acid, the treatment time is short when the air temperature is high, and the treatment time is long when the air temperature is low. If more acid is added, the treatment time will be short, otherwise the treatment time will be long. Second, the method of crushing the seed coat. Put the seed on the grinding plate, 3 cm thick, turn with the mill, and when the seed coat is crushed, it will be yellow and white.
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Key points of planting and cultivation techniques of licorice
An overview of licorice, alias sweet grass root, red licorice, powder grass. Licorice GlycyrrhizauralensisFisch., a leguminous plant, was used as medicine with root and rhizome. It has the effect of clearing heat and detoxification, moistening the lungs and relieving cough, reconciling various medicines, and grilled licorice has the effect of tonifying the spleen and tonifying qi. Plant characteristic perennial herbs with stout, cylindrical roots, sweet, brownish red rind. The stem is erect, the lower part is slightly lignified. Leaves alternate; parasite pinnately compound leaves, leaflets 7 Mel 17, ovate-elliptic, both surfaces covered with glands and short hairs. Racemose flower
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