How to plant asarum? Asarum is a perennial herb with solitary flowers and a taupe seed. As a Chinese herbal medicine plant, Asarum can not only stagnate chills, but also relieve pain and cough. Today, Xiaobian will take medicine farmers to learn the key points of cultivation techniques of Asarum.
1 growth habits
Asahi is a cool, humid environment. Generally, it is planted at the beginning of July. At the beginning of August, the seeds are split. In the middle of August, bacon is exposed. In early September, it can reach 4 cm. In October, it can reach 6 cm or more. In the fifth and sixth years, most of them were two true leaves, and they were heavily flowered and strong.
2 breeding methods
It is mainly used for seed propagation and can also be propagated by roots. Seed propagation: The seed treatment method is to dig a shallow pit in the shade under the forest, the depth is about 18 cm, and the size depends on the number of seeds. Mix 1 part of the seed with more than 5 parts in a pit, cover about 5 cm of sand, and cover the leaves or straw. Routine inspection, pay attention to the insulation does not accumulate water, soaked in about 45 days to avoid germination. Seeding method: There are three kinds of dissemination, striping and hole broadcasting.
Spread: The seeds can be mixed with 10 times of fine sand or soil and spread on the noodles. The seeding amount is 8-10 kg per mother.
Striping: 12 cm in line spacing, 4 cm in width, and about 125 grains per line.
Hole sowing: line spacing 12 cm, hole distance 6 cm, 6-10 seeds per hole, covered with soil after sowing, about 2 cm thick, and covered with grass or leaves about 3 cm to keep the soil moist.
Seedling transplanting: It is better to transplant seedlings for 2-3 years. Then apply the base fertilizer to the horizontal ditch on the raft, the row spacing is 15-20 cm, and the plant spacing is 7-10 cm. The roots are placed in the ditch, and the roots are stretched. The thickness of the cover soil is about 5 cm away from the soil table.
Root-reproduction: cut a section of 4-5 cm long in the upper part of the rhizome, each section must have 1-2 buds and keep the root strips, then dig a hole at a line spacing of 20 cm, and 2-3 roots of each hole . 
3 Cultivation techniques
3.1 Land selection and land preparation
Asahi is loose and fertile, rich in organic soil, and the pH is neutral or acidic. Avoid glare, multi-selection of under-cultivation is not strict with tree species, but it is best in broad-leaved forest. Planting with old ginseng or farmland must be shaded, and the slope is good. The slope is within 10 degrees. The land preparation should be carried out in spring and summer, and the dry land preparation is conducive to soil ripening, so that the asarum grows well and the disease is light. Remove the small shrubs or overly dense branches of the woodland before shaving, and maintain the light transmittance of the forest land by 50%-60%. The depth of the planing surface is 15-20 cm, and the stone and tree roots are removed. The ground is flat, and the width is 1-1.2 m, the length is 10-20 m, the height is about 20 cm, and the working track width is 50-80 cm. The thick working track of the soil layer can be slightly narrower, and the thin working track of the soil layer is wider.
3.2 Field Management
Watering and weeding: The roots of Asarum are not drought-tolerant, and the temperature should be checked frequently. When the soil is dry, it should be watered in time, and the grass should be pulled out in time to ensure the seedlings and the seedlings. Adjusting the light: Before the month of May, the temperature was low, and the light was not required to be shaded. From June, the light was controlled at 50%-60%.
Fertilization: Asarum is a hi-fertilizer plant. The base fertilizer is best for pig manure, and the fertilizer is calcium phosphate.
Removal of flower buds: The annual flowering and fruiting of the plants consumes a large amount of nutrients and affects the yield. Therefore, except for the remaining land, all the buds are removed when they are extracted.
4 Pest control
Disease prevention and control: prevention and treatment of sclerotinia disease: strengthen field management, no water in the sputum, no stagnation, pay attention to ventilation; light is adjusted to 50%-60% transmittance; use 50% carbendazim 500-1000 times The liquid sprayed leaves or roots were found to be completely removed, and then the soil was disinfected with 5% formalin.
Pest control: mainly tigers, Asarum, black caterpillars, etc. It is controlled by high-efficiency and low-toxic agents such as pyrethroids, and five high-level pesticides such as methamidophos are strictly used.
5 harvesting processing
Harvest: The seed-seeded asarum can be harvested in 4-5 years; harvested in 3-4 years with two-year seedling transplanting. The harvesting period is preferably mid-September. Processing: remove the soil and debris, every 10 plants, knitted into a garlic valve, placed in a ventilated place, dry, can not be washed, after washing, the leaves are black, the roots are whitish, the leaves are yellow after sun exposure, reduce the odor, affect the quality .
The above is the cultivation technical point of the Chinese herbal medicine Asarum. Now the prospect of Chinese herbal medicine planting is getting better and better, you still don't hurry to pick several varieties suitable for your own cultivation!
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