What are the technical points of seedling raising and transplanting of licorice?
The main results are as follows: (1) Land selection and preparation: licorice has strong adaptability and can be planted in general soil, but the sandy loam with deep soil layer, loose soil and good drainage is the best. Combined with deep ploughing in autumn, 2000 kg of rotten farm manure and 20 kg of diammonium phosphate or calcium superphosphate were applied per mu, and then raked flat to make fine beds.
(2) Seedling raising and seedling protection: seedlings can be raised and sowed at the beginning of May, the seedling land will be watered before sowing, and when the surface is slightly dry, the narrow row planter will be used for sowing, the seed consumption per mu is 8 million kg, and the seedling protection plant is 100000-120000 plants. After the seedlings were watered to preserve soil moisture, there were no weeds in the field during the growing period. When the seedlings grow to 10-15 cm, urea can be applied once with water, with a dosage of 10 kg per mu. Watering according to the weather in the later stage of growth.
(3) transplanting method: transplanting was carried out in late April of the second year. The "green onion method" was used to transplant 12000-16000 plants per mu (the specific method is the same as that of Radix Astragali). Generally used oblique planting, sandy land can also be planted flat. Strengthen field management during the growing period.
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Cultivation techniques of licorice
Liquoric root belongs to leguminous perennial vegetation plant, medicinal part namely root and rhizome. It contains 5 - 11% of triterpenes, glycyrrhizin, followed by flavonoids such as liquiritin, liquiritin, isoliquiritin, isoliquiritin, etc. It is an indispensable medicine in many traditional Chinese medicine prescriptions. (1) Land selection. Licorrhiza likes dry climate, suitable for sandy loam with deep soil layer and low groundwater level, which can achieve silty soil with more fiber, sweet taste and high quality.
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Seedling raising and transplanting techniques of Glycyrrhiza uralensis
Licorice is an important medicinal material, with the strengthening of national ecological environment protection, the utilization of wild resources has been very limited, licorice seedling transplanting technology has become very important. Licorice is a perennial herb of Leguminosae, which is listed as a key specially controlled medicinal material by the state. Glycyrrhizic acid as a sweetener is 300 times sweeter than sucrose and is one of the best natural sweeteners found so far. The state explicitly orders licorice as a national second-class protected plant, which is not allowed to be picked casually, and the contradiction between the supply and descent of licorice is intensified. Therefore, the artificial cultivation and high yield and high quality cultivation of licorice were studied.
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