Field management of licorice
In the year of direct seeding between seedlings and fixed seedlings, the height of seedlings is about 6 cm, the distance between plants is 10-15 cm, and the distance between plants is kept at 30 cm in the second year.
After planting licorice by mid-ploughing, weeding should be done diligently in the first year and the soil should be loosened in time. To loosen the soil from shallow to deep, herbicides can also be used to control weeds. By the second year, when the plant grows up, it is difficult for weeds to grow and can no longer be weeded by intertillage.
Topdressing sowing or planting in addition to base fertilizer, in the annual growth period, phosphorus and potassium fertilizer can be applied in early spring, plant ash or compost 1500-2000 kg per mu, calcium superphosphate 30 kg to promote root growth.
After the aboveground part of licorice withered in late autumn, the ground can be covered with 2000 kg of mature farm manure per mu to increase soil temperature and soil fertility. Because licorice root has nodule and nitrogen fixation effect, nitrogen fertilizer can not be applied in general.
Irrigation and drainage licorice, whether it is propagated by direct seeding or rhizome, should keep the soil moist before emergence. After emergence, due to the strong drought resistance of Glycyrrhiza uralensis, general natural precipitation can meet its growth needs. However, it should be watered during a long drought, and the watering times should not be too much, but it should be watered thoroughly each time to facilitate the downward growth of the root system. Pay attention to drainage in the rainy season.
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Morphological characteristics of Glycyrrhiza uralensis and suitable seed environment
[morphological characteristics] Glycyrrhiza uralensis is a perennial herb with a height of 30cm and 100cm. Covered with white pubescence and glandular hairs. Aboveground stems erect, lower lignified, branchlets angular, green. Leaves alternate, odd status compound leaves. Leaflets 3-8 pairs, ovoid or ovate-elliptic, entire, apical leaflet larger. Raceme, axillary, pedicel very short, with an ovate bracteole below base, calyx bell-shaped, green, Corolla butterfly, purple or blue purple flowers. The fruit is a pod, narrowly rectangular, bent into
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Biological characteristics and growth habits of Glycyrrhiza uralensis
1. Biological characteristics (1) Flower size and seed characteristics due to different habitats, licorice naturally formed three ecotypes, namely sand grass, beam grass and beach grass. The flower size of different ecotypes of Glycyrrhiza uralensis is similar, but the difference of seed size is obvious, the order of seed size is beach grass > beam grass > sand grass, and the hard seed rate is beam grass > sand grass > beach grass. Licorice cultivated with seeds generally blossoms and bears fruit after 3 years. (2) Distribution characteristics of root and rhizome of sandy grass
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