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Growth habit
Campanulaceae more like a cool and humid environment, wild in the sunny slopes and grass. Strong cold resistance, sealing Hanli general requirements of the soil is not strict, low moisture, easy to rot roots, seed life is generally 1 year under normal conditions, the seed germination temperature suitable for 15-30 °C, hi sunny.
Cultivation Techniques
Sandy loam or humus soil with deep and well-drained soil is the best choice for soil preparation and site preparation, followed by loam soil. It is forbidden to choose low-lying stagnant water, poor drainage, and heavy-duty white soil, which is conditional when plowing. Appropriate amount can be applied to farmyard manure or grass ash, 30 kg of diamine, deep-turn 30 cm, made after leveling. 2 meters wide, 15 centimeters high, the length of the trampoline depends on the terrain.
Seeds are seeded with seeds that are full, germinating, and disease-free. Sowing is divided into autumn sowing and spring sowing, and autumn sowing is completed before freezing. Spring waves can be sown with a spacing of about 20 centimeters when the local temperature is stable above 18 degrees until the end of June. For even sowing, seeds can be mixed before sowing. After 3 times fine sand, evenly spread the seeds into the sowing ditch, cover the soil to a depth of 1 cm, and suppress the watering after sowing, in order to make the seedlings emerge quickly and evenly after sowing, and soak the seeds with water for 10 hours before sowing. After being placed in a wet cloth bag, the germination is performed at room temperature of about 25 degrees, rinsed once a day with fresh water for 1-2 times, and reseeded for about 5-7 days when the seeds are dewy.
Transplanting Because the transplanting of bellflowers is not only lower than the live broadcast, but also increases the labor input, it is generally not used.
Field management
Seedling Dingmiao seedlings in the seedling height of 3 cm when combined with seedlings, between the dense and seedlings, seedling height of 5 cm, according to the spacing of 7-10 cm from the seedlings, such as the lack of seedlings should be timely replanting.
Watering and drainage Platycodon grandiflorum seedlings are afraid of drought in the early stage, and should be watered in time in case of drought. In the rainy season, attention should be paid to the elimination of water in the ground and prevention of diarrhea.
The Platycodon grandiflorum is a perennial plant. It uses dry rooted medicine after peeling and has the functions of expelling lung, removing cold, relieving cough, reducing swelling, and removing pus. It mainly treats exogenous cough, sore throat, unpleasant cough, chest tightness, abdominal distension and bronchitis, etc. It is a combination of medicine and food. For many years, the amount of small foods that people are accustomed to use far exceeds the amount of medical use. Mainly produced in the northeastern provinces, due to the sharp decline in wild resources, mainly relying mainly on family species, due to the development of the food industry in recent years and the increase in export volume, the demand for Campanulaceae increased.