Key points of High-benefit cultivation and Management of Glycyrrhiza uralensis

(1) Glycyrrhiza uralensis Fisch has strong adaptability for land selection and preparation, and most soils can be planted except saline-alkali soil. Apply stable manure or compost as base fertilizer in autumn, turn more than 20 cm deep, rake flat to make a border, the border is 1 meter wide and 17 cm high, and sow seeds in small trenches on the border surface when planting.

(2) the method of reproduction is seed propagation and rhizome propagation.

1. This method can be used for seed propagation to enlarge the area.

(1) seed treatment in the natural state, the hard seed rate of licorice seeds is as high as 80% and 90%, and the seed treatment before sowing is the key to high yield. There are three commonly used treatment methods in production: first, heating and re-soaking, soaking the seeds in 60 ℃ warm water for 6 hours, bleaching the blighted seeds, etc., then using the "rice washing method" to bleach the open seeds; then soaking the unsoaked seeds in 100 ℃ boiling water for 2 seconds, fishing out, immediately soaking them in cold water, finally soaking in 60 ℃ warm water for 2 hours, then rinsing off the mucus with clean water. The second is mechanical treatment, beat the seeds slowly once or twice quickly with a rice mill, then soak them in 40 ℃ warm water for 3 hours, fish them out and rinse them with clean water. The third is sulfuric acid treatment, which is mixed with 80% sulfuric acid per kilogram of hard seeds, soaked at a temperature of 15-20 ℃ for 2 hours, and observed at any time. If small black spots are found on the surface of most seed coats, they can be taken out and washed in running water for half an hour.

(2) Seedling transplanting watered the border surface, sowed the treated seeds when the water seeped, and then covered with soil about 1.5 cm. The sowing rate is 60,120kg per hectare, and the seedlings are protected by 1.05 million ~ 1.5 million plants. It can also be sowed in shallow trenches according to 15 cm row spacing or 5 cm (3-5 seeds per hole) in the border, and then covered with soil and watered. In order to keep warm and moisturize and accelerate seed germination, a plastic shed or grass cover can be set up on the border surface, and the seedlings can be removed. In September of that year or the following spring, it was transplanted according to the row spacing of 50cm × 80cm × 30cm. When transplanting, open a ditch with a depth of 15,25cm and a width of 40cm, the distance between ditches is 1520cm, apply enough rotten farm manure in the ditch, and apply 375-750kg diammonium phosphate per hectare. Finally, the slender is tilted into the ditch according to the plant spacing of 8cm (it can also be planted in a shallow ditch) and covered with soil.

(3) the live broadcast in the open field is usually sown in spring from March to April and in autumn from July to August. Row spacing 30 cm, sowing depth 2-3 cm, sandy land or dry land can be sown appropriately. The sowing rate is about 22.5kg per hectare, and it is suitable to keep about 375000 seedlings.

2. Rhizome propagation uses rhizome to propagate and grow fast. Dig out the rhizome in spring or autumn and cut it into small segments of 5 cm and 10 cm, each with at least 1 or 2 buds. In the finished border, open a trench 9 cm deep according to the row spacing of 90 cm × 15 cm 20 cm, lay the roots flat in the ditch, cover the soil with compaction and water it, and often keep the soil moist.

(3) after the field management seedlings come out, the seedlings can be planted once, and the seedlings are fixed when the height is 5 cm. Generally, the number of seedlings per hectare is kept at 180000-225000, and the plant spacing is 10-15 cm. In the first year, young seedlings should weed and loosen the soil frequently, cultivate the soil 2 times 3 times, and topdressing 1 times 2 times. From the second year, licorice roots begin to tiller, and there is no need for intermediate ploughing and weeding. Fertilization is mainly based on stable manure or human feces, urine and superphosphate. Remove stagnant water in time after rain in the depression.