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 the licorice was harvested in autumn or spring, the thick roots were used as medicine, and the small roots and strong stems were selected as seeds, which were cut into small segments of 10 murmurs of 15 cm, each with 2 Murray and 3 buds. In autumn, the soil will be turned to a depth of 30ml / 50cm, with sufficient basic fertilizer, 2500 kg of manure per mu and 200kg of calcium superphosphate, ploughed and raked flat. The following spring sowed about the first ten days of April, ditched according to the row spacing of 30 cm, ditch depth of about 10 cm, according to the plant spacing of 10 Murray 15 cm, the strong root and stem were swung flat in the ditch, covered with soil rake, pressed, watered and covered with plastic film, and could also be concentrated for seedling cultivation, scattered transplanting, ridge cultivation, and covered with straw or plastic film.

Licorice should always keep the soil moist before and after emergence to facilitate seedling emergence and seedling production, and should be watered in time during drought. When the seedlings grow 3 true leaves, interseedling should be carried out. After setting the seedlings, the distance between the seedlings should be 10 murmur13 cm. Weeds should be weeded in time at the seedling stage. When the plants grow up, the roots and strong stems should be exposed to the ground, and the soil should be cultivated properly. If there is a big nest of grass that can be pulled out, it is appropriate to hoe. In winter, 2,000kg of soil fertilizer can be applied per mu. After two years of cultivation, the roots and strong stems of licorice have been covered all over the plot, so there is no need for special management.

Licorice has diseases such as rust, brown spot, powdery mildew and insect pests such as aphids and red spiders. Rust was controlled with 0.30 Mel 0.40 degree stone sulfur mixture or 97% dimethrin sodium 400-fold solution; Brown spot was controlled with 100 Mel 160 Bordeaux solution or 70% methyl thiophanate wettable powder 1500 Mel 2000-fold solution; powdery mildew was controlled with 0.20 Mel-0.30 degree stone-sulfur mixture; aphids were controlled with 50% fenitrothion 1000 Mel 2000-fold solution or 40% dimethoate EC 1500 Mel 2000-fold solution. Red spiders are sprayed with 20% triclofenac 1500 Mel 2000 times or 25% insecticidal water agent 500 Mel 1000 times, once a week, several times in a row.

Licorice can be harvested after planting 2mi-3 years, and when the aboveground stems and leaves wither from late September to early October. Licorice root must be deeply dug, can not be cut off or hurt the root bark, after digging out to remove the residual stem, soil, avoid washing, while fresh out of the main root and lateral root, sun to half-dry, tied into a small handle, and then dried to the whole dry medicine.