Control of Brown spot of Glycyrrhiza uralensis
Brown spot is a half-known fungus infection in fungi, which mainly harms leaves. Its symptom is: the leaf produces round or irregular disease spot, the center of the disease spot is grayish brown, the edge is brown, and there are black mildew on both sides of the disease spot. Control method: spray 1 ∶ 1 ∶ 100-1 ∶ 1 ∶ 160Bordeaux liquid or spray 70% methyl topiramate wettable powder 1500-2000 times.
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Seed treatment techniques of artificial planting of Glycyrrhiza uralensis
Licorice seed coat is solid, water absorption is poor, the germination rate is only 4-6%, need to be milled or sulfuric acid treatment, break the seed hard state, improve the germination rate and emergence rate. 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 short when the temperature is low.
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High-yield cultivation of licorice
Licorice, also known as sweet grass root, is a medicinal plant of Leguminosae, which is used in medicine with roots and strong stems, which can tonify the spleen and replenish qi, clear away heat and detoxification, moisturize the lungs and relieve cough, and reconcile various medicines. Licorice likes dry climate and is resistant to severe cold. It is suitable for planting in sandy soil with deep soil layer, good drainage, low groundwater level, rich calcium and neutral or slightly alkaline soil. Waterlogged land, land with high groundwater level and acid soil are not suitable for planting. Licorice is usually propagated with strong roots and stems. After harvesting licorice in autumn or spring, put the thick root into medicine and choose the small one.
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