It is a perennial herbaceous plant of the umbelliferae family, and it is a typical perennial herbaceous plant in Kangle County. It is a typical cold and humid climate zone with an altitude of 1898-3908m, an annual average temperature of 6°C, a frost-free period of 127d, an average annual rainfall of 548.4 mm and an annual evaporation of 1261.6 mm. The annual sunshine hours are more than 2 430 h. After years of exploration and practice, we have finally found a set of standardized cultivation techniques suitable for local promotion. 1 羌 live seedling technology 1.1 Seed harvesting treatment 1.1.1 Seeds are harvested using seeds of three-year-old plants. The lived seeds are matured in the autumn of August-September. When adopting the principle of “first ripening first, harvesting while harvestingâ€, the seeds should be placed in a ventilated and dry place. 1.1.2 Seed treatment Seed treatment Generally, the low temperature sand storage method is adopted. The seeds are soaked in warm water for 2 days, then removed and placed in the selected fine sand and stirred evenly. Then, in a well-ventilated woven bag, press 10 kg/ After the bag is packed, the seal is buried in the deep pit for 3 months, and then the seedlings can be taken out. 1.2 Nursery 1.2.1 Site selection and land preparation, fertilization and nursery should choose plots with damp land, relatively flat terrain and good drainage. At the same time, combined with land preparation, 30 000~45 000 kg/hm 2 of farmland fertilizer and 300 kg/hm 2 of urea. Phosphate potassium fertilizer 750 kg / hm 2 . 1.2.2 Sowing time is carried out in spring and autumn, autumn is broadcast in late October, and spring is broadcast in late March. 1.2.3 Seeding is usually carried out by seeding or spreading. The seeding rate is 45-75 kg/hm 2 . Covering wheat straw in time after sowing is conducive to emergence. 1.2..4 After weeding and waiting for the seedlings to be released, we should pick up the grass in time, choose to cover the grass in cloudy days, and manually weed the seedlings when it is slightly longer. 1.2.5 Topdressing combined with weeding in the rainy days with urea 45 ~ 75 kg / hm 2 . 1.2.6 Seedlings excavation and storage Seedlings shall be excavated in late October or after the soil is thawed in the spring of the second year. The seedlings of the excavated seeds shall be tied, and each 0.5 kg shall be tied into a handle, in the ventilated shade Dig the pit for deep burial. 2 transplanting and field management In the middle and late October of that year, seedlings were transplanted and transplanted, or transplanted in late March of the second year. 2.1 Land preparation and fertilization It is advisable to plant the sputum in cereals and bean crops. Avoid continuous cropping, and do not use it with other umbelliferous herbs. Planted before the winter, in the timely and deep turn after the harvest of the former crop, combined with the base fertilizer to apply the base fertilizer, level the mantle. Planted in the spring, after the soil is thawed in the second year, deep-turning and hoeing are carried out, and 75 000 kg/hm 2 of farmyard manure is applied at the same time. The application of fermented oil residue is 1 500 kg/hm 2 and diammonium phosphate is 375-525 kg/ Hm 2 and urea 150-300 kg/hm 2 . 2.2 transplanting It can be planted in the open field, or it can be planted on the side of the film. The planting in the open field can be excavated or planted in trenches. The transplanting density is 25 cm and the row spacing is 30 cm. During the transplanting, the seedlings were placed in the nest, and the seedlings were slightly pressed into the soil with a depth of 3 to 5 cm. The method of planting on the membrane side was basically similar. 2.3 Field management 2.3.1 After weeding and weeding, the transplanted seedlings after transplanting in spring, the first weeding is carried out, and the second weeding is carried out according to the situation around 30 days, combined with the second weeding for proper soiling and topdressing, urea application 225 kg /hm 2 , diammonium 225 kg/hm 2 , potassium sulfate 75 kg/hm 2 . In the second year of April of the second year, weeding and weeding were carried out, and 37 500 kg/hm 2 of composted farmyard manure and 300 kg/hm 2 of phosphorus and potassium fertilizer were applied. Stop topdressing about 1 month before harvest. 2.3.2 Reasonable rotation of pests and diseases control; use excellent seed seedlings infected with no pests and diseases; use correct and reasonable use of high-efficiency, low-toxic and low-residue pesticides to effectively control pests and diseases. Control method of live root rot: use disease-free seedlings; seedlings are soaked with 1:1:150 Bordeaux mixture, dried and then sown; 50% carbendazim 1000 times solution or 70% of A in the early stage of the disease The thiophanate-based wettable powder spray is controlled. The live pests mainly include aphids, carnivores, tigers, crickets, and golden worms. In the prevention and control of tigers, cockroaches, golden worms, etc., 40% phoxim emulsifiable concentrate can be used to irrigate the roots; mites can be sprayed with 10% acetamiprid microemulsion 150-225 g/hm 2 or 5% of imidacloprid EC 1 1000 times liquid evenly sprayed. 2.4 Harvest The plots that have been grown for more than 2 years after transplanting can be harvested. Generally, in October-November, the stems and leaves of the lived stems are yellowed and then the soil is frozen before the soil is frozen or the soil is thawed before the second spring.
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