Problems needing attention in growing licorice

First, seed treatment. Before sowing, heat treat for 30 seconds with 60: 100 ℃ of water; then soak in warm water for 1 day and night, the germination rate can reach 50%. If treated with concentrated sulfuric acid, when the seed coat blackens, rinse it in clean water immediately, then soak it in warm water, and sow the seed when it expands, the germination rate can reach more than 90%.

Second, planting methods. 1. Spring sowing or summer sowing. The sowing rate per mu is about 300,500g, the sowing depth is 3-4cm, the row spacing is 50-60cm, and the number of seedlings per mu should reach 7000-10000. 2. Raising seedlings and transplanting. Can be strip sowing or small bed sowing, increase the density, cultivate annual strong seedlings can be transplanted, spring or autumn can be planted. Ploughing can be used when planting, according to row spacing 60 cm, plant spacing 15-20 cm, about 7000 plants per mu, planting depth to the rhizome and the ground is appropriate, irrigation after planting. Seedlings generally emerge 5-7 days after sowing, so there should be good soil moisture before sowing and no irrigation after sowing to avoid consolidation. 3. Plant roots. Will dig the fresh licorice rhizome, choose the bud eye cut 15-20 cm long, use the step plough to open the ditch, put the mother root vertically or obliquely in the ditch, cover the soil 10 cm, the cultivation time can be spring and autumn, irrigation after planting.

Third, field management. Licorice management is mainly to preserve soil moisture, the first year to ensure the growth of seedlings, 2 years later deep root, some soil moisture can be, generally the use of snow water can ensure normal growth. In the third year of mining, pay attention to preserving the mother root. After digging, level the ground, pour good water and promote the development of new seedlings.