"Seminar Cultivation of Chinese Medicinal Materials" Expert Series Lecture 5 Growth habits Achyranthes are born near the house, in forest margins and on hillside grasses. Like the warm and dry climate, not cold, the temperature died at -17 °C. In clay or alkaline soil should not be planted, resistant to continuous cropping. The growth and development are divided into four periods: the seedling stage (from emergence to plant height 15 to 20 cm, July), the planting period (rapid growth in the ground, August), and the rapid growth period of the root strip (slow growth in the shoot, root The rapid expansion of the bar (from September to October), the mature harvest period (withered to the ground, in November on the Chinese sentence). Cultivation techniques First, the election site preparation. Achyranthes is a deep-rooted crop, and sandy loam soil with deep soil, loose fertility, good drainage, and low groundwater level should be selected. Deeply pour more than 60 centimeters of soil, apply 3,000 kilograms of fully-fertilized manure, 50 kilograms of superphosphate, and 50 kilograms of rapeseed per acre. Mix and evenly mix these fertilizers. Spread them evenly over the topsoil for several days. Plow again. Make a 1.3-meter wide sorghum or flat rake. The sorghum is 40 centimeters wide and open deeper drains around. Second, the breeding method. Seed breeding, in the first half of July for the sowing period. Premature sowing of roots with multiple cicadas, poor quality of herbs; too late production is low. Before sowing, soak the seed in warm water of 20°C for 12 hours, collect and dry it, mix it with grass ash, human and animal urine and mix it evenly, sow it on the sorghum surface, gently rub the soil surface with hoe, so that the seed sinks into the soil, and then Spread a layer of fine soil (fine sand), 1 to 1.5 centimeters thick. Finally, a thin layer of chaff is sprinkled on the surface to facilitate seedling emergence. Per acre sowing rate of 500 to 750 grams. Sowing before the beginning of May, when the flowering result, the root can not be used as medicine. The seeds are divided into autumn seeds, autumn vine seeds and vinegar seeds. The best is Qiu Zi and the worst is vinegar. Field management began to emerge 5 days after sowing. The seedlings grow weakly in the early stage, and in case of dry weather, they should be watered in time to protect the seedlings. When the seedling height 5 to 6 cm, the first time the seedlings, weak to stay strong, keep the seedlings from 6 to 7 cm; when the seedling height of about 10 cm, according to row spacing 15 cm 15 cm seedlings. In the absence of seedlings, select cloudy days to make up the seedlings. Cultivated weeding usually 3 to 4 times. After Qi Miao, the first cultivator weeding, and spreading thin manure urine and grass ash; the second time after Dingmiao, combined with cultivator weeding, topdressing organic fertilizer 1000 kg, urea 5 kg, potassium nitrate 10 ~ 15 kg. When buds are removed, the top inflorescences are removed in batches, so that the nutrients can be supplied to the roots. Seedling period until early August, should control the amount of irrigation to promote the main root bar. After August, the main root no longer stretches, and the amount of irrigation can be larger to promote the firm roots. After the rainy season and heavy rain, it is necessary to drain the drain in time. Dingmin Pharmaceutical supply Selexipag API and Selexipag Intermediates with high purity and best price. The main products CAS No are as follows: 475086-01-2, 475086-75-0, 41270-66-0, 243472-70-0, 42042-71-7. Sample can be sent if you request. Selexipag Intermediates Cas 475086-75-0,Selexipag Intermediates,6-Diphenylpyrazine Shijiazhuang Dingmin pharmaceutical Sciences Co.,Ltd , https://www.dingminpharma.com
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