High-yield cultivation techniques of Ligusticum ligusticum

Ligusticum, alias Ligusticum incense, Ligusticum ligusticum. It is used in medicine with underground rhizome, which has the effects of dispelling wind and dispelling cold, relieving pain and so on. Main treatment of wind and cold, head pain and other symptoms.

Morphological characteristics

1. Ligusticum is a perennial herb of Umbelliferae. The rhizome is irregular and massive, with many fibrous roots. Stem erect, Terete, hollow. Leaves alternate, 2-3-pinnately divided; base dilated into sheath-shaped, clasping; umbels terminal, involucral bracts linear, pubescent; umbellules with many flowers; petals 5, white, elliptic to Obovate; stamens 5, filaments incurved; styles 2, style base paniculate. Double hanging fruit ovate.

2. The main differences between this species and Ligusticum ligusticum are as follows: short rhizome, striped roots, often bifurcated, dark brown surface. Stem purplish, upper part branched. Cauline leaves broadly ovate in outline, 2-3-pinnatifid, compound umbels pubescent, involucral bracts 2, caducous; style base elevated, oblate-conical, shorter than fruit. Double hanging fruit oval.

I. growth habits

Gusamoto prefers a cool, humid climate. Resistant to cold, afraid of high temperature, afraid of water stains, avoid continuous cropping. The requirement of soil is not strict, but it is better to use sandy loam with deep soil layer, loose and fertile soil and rich organic matter. Heavy clay, saline-alkali land and low-lying land are not easy to grow.

II. Soil preparation and fertilization

Select fields with high terrain and good drainage for intensive cultivation. Combined with soil preparation, apply sufficient basic fertilizer: 3000 kg of soil miscellaneous fertilizer, 20 kg of urea and 50 kg of phosphorus and potassium fertilizer per mu. Then make beds and wait for sowing.

Third, sowing seeds

Ligusticum ligusticum is propagated with seeds and rhizomes. The sowing time is spring sowing and autumn sowing. Spring sowing before and after the Qingming Festival, autumn sowing before freezing. Seed propagation: before sowing, open a shallow ditch on the finished border surface, then spread the seeds evenly into the ditch, cover the soil, and water to preserve soil moisture to facilitate seedling emergence. The sowing rate is 2 kg per mu. Root bud propagation: first dig out the ligusticum and divide it into several plants. Then it was planted on the finished border according to the row spacing of 15 × 12 cm. Water to preserve moisture in order to survive.

IV. Field management

After the seedlings of Ligusticum ligusticum, attention should be paid to ploughing and weeding. It is often watered in dry weather and drained in time in cloudy and rainy weather. Before and after the Beginning of Autumn, the underground rhizome entered the expansion period, should be topdressing once: 10 kg of urea and 10 kg of potassium dihydrogen phosphate per mu. Clean up the fields in winter and sprinkle a layer of soil fertilizer on the border.

Prevention and control of diseases and insect pests

The main disease of Ligusticum ligusticum is powdery mildew, which can be controlled by strychnine at the initial stage of the disease. Underground pests are trapped with poison bait.

VI. Harvest and processing

Ligusticum ligusticum, which is propagated with seeds, can not be harvested until it grows for 2-3 years. The rootstock, which is propagated by rhizome, grows and harvests for 1-2 years. When the aboveground stems and leaves wither after autumn, cut off the aboveground parts first, then dig out the underground roots, clean the soil, dry or dry them and then be sold as medicine. The yield is 250 kg per mu.