Identification of authenticity of Panax Notoginseng
Panax notoginseng is commonly known as Tianqi, with large size, heavy weight, smooth body surface, brown and black, hard quality, gray-green or yellow-green cross-section color is better. In the private sector, its quality and price are often determined according to the number of stem blocks of Panax notoginseng per catty. The bigger the head, the better the quality and the higher the price. If there are 20 Tianqi enough to weigh 1 jin, this is the best, called the "seven kings". There are 60 to 80 Panax notoginseng enough for 1 jin, called 80. If there are more than 300 Tianqi per jin, it is called headless, and the quality is the worst. Panax notoginseng chewing slightly bitter, no spicy, fragile. What is easy to be confused with Panax notoginseng is zedoary.
Zedoary turmeric body surface is not smooth, gray, hard, cross-section yellow or brown. There are horizontal lines. The chewing is slightly bitter, with a spicy feeling and a strong smell.
At the same time, pig blood can also be used to identify the authenticity of Panax notoginseng, the specific method is to put Panax notoginseng powder into a small amount of pig blood, pig blood can be found into water. This is mainly due to the hemolysis of the saponins contained in Panax notoginseng.
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Planting Management of Panax Notoginseng
Site selection: there are many family species of Panax notoginseng, and the cultivated land should choose Xiangyang hillside. Generally speaking, sandy black loam is the best soil, ash soil is the second, red soil is the second. Clay is not suitable for cultivation. Site selection is one of the important factors for the success or failure of the introduction of Panax notoginseng. It is appropriate to choose a hillside with an elevation of 700 mi 1500 meters, Dongyang and a slope of 10 mi 20 degrees. In the low mountain area or hilly plain area above 400 meters above sea level, the diseases and insect pests are more serious, and the leaves often fall off in the early stage. Experience has proved that it is better to choose a cool and ventilated hillside with high mountain shade in the west.
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Cultivation techniques of Panax Notoginseng
Panax notoginseng was propagated by seeds. The seeds of three-year-old plants were selected and collected when a large number of fruits matured and turned red from November to December. Remove the pericarp and sow the mature and pest-free seeds in winter immediately. If it is too late to sow, the fruit should be spread out in a sieve, about 3 cm thick, and can be stored in a ventilated and cool place for 7 to 10 days. For outward transportation, the pericarp should be removed, cleaned, mixed into 2 times wet sand and stored in wooden boxes. Sowing land and transplanting land should choose loam or sandy loam with high topography and good drainage, and sunny gentle slope (slope 515 degrees).
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