What is the planting technology of Platycodon grandiflorus?
This article focuses on the planting technology of Platycodon grandiflorus and related topics about the cultivation techniques and care tips for this plant. Please see the detailed introduction below.
Platycodon grandiflorus belongs to the Campanulaceae family, and its roots are used as medicine. It grows wild in grasslands on slopes and is distributed in most parts of China. It is easy to cultivate and has a wide range of uses, commonly used as a Chinese herb. In recent years, it has been one of the scarce commodities in the market. Counties such as Zuojian, Qinxian, Qinyuan, and Xiangyuan in Shanxi Province all cultivate it.
(1) Land selection and preparation
Select a site that is sheltered from wind, sunny, and has good drainage. Apply 3000 kilograms of manure or compost per mu and 20 kilograms of superphosphate, deeply plow, level, and rake the soil, then create ridges.
(2) Propagation methods
Propagation by seeds, which can be direct sowing or seedling raising, with direct sowing being the best. The seeds need to be treated to germinate: soak the seeds in 50-degree water, stir until cool, then soak for half a day, take out and put them in a damp cloth bag, and place them in a location with a temperature of 25-30 degrees Celsius. After 3 to 4 days, when the seeds start to germinate, they can be sown.
1. Direct sowing method: Before and after Guyu (Grain Rain), on the prepared land, water thoroughly first, then after the water slightly dries, dig trenches with a spacing of 20-24 centimeters, 1 centimeter deep, sprinkle the seeds in the trenches, cover with soil slightly pressed, and seedlings will emerge in about half a month.
2. Seedling raising method: Before and after Qingming (Clear and Bright), prepare a seedbed in a sunny and sheltered area, water thoroughly, then dig trenches with a spacing of 9 centimeters, 1 centimeter deep, mix the seeds with sand and sprinkle them in the trenches, cover with soil slightly pressed, and cover the seedbed with straw mats or plastic film to maintain moisture and temperature. Seedlings will emerge in about 10 days. When the seedlings are 4.5 centimeters tall, thin out the dense and weak seedlings, maintaining a spacing of 4-6 centimeters, and apply human waste fertilizer with watering. When the seedlings are 6-9 centimeters tall, transplant them to the field with a row spacing of 20-24 centimeters and a plant spacing of 9 centimeters.
(3) Field management
1. Thinning and weeding: For direct-sown Platycodon grandiflorus, when the seedlings are 4-6 centimeters tall, thin the seedlings to a spacing of 9 centimeters while weeding and loosening the soil. After transplanting, thin the seedlings and loosen the soil. When weeding in the seedling stage, care should be taken to prevent the roots from being injured to avoid affecting normal growth in later stages. Throughout the growing season, the soil should be kept loose and free of weeds, and before the rainy season, earth should be added to the ridges to prevent lodging.
2. Fertilization and watering: After the seedlings emerge, water appropriately to keep the soil moist. When the seedlings are 15 centimeters tall, apply 20 kilograms of superphosphate and 10 kilograms of ammonium sulfate or a certain amount of human waste fertilizer per mu with watering. Apply human waste fertilizer again before flowering.
What is the planting technology of Platycodon grandiflorus?
3. Disease and pest control: Platycodon grandiflorus generally has few diseases and pests. Sometimes, ground beetles can cause damage, which can be controlled using poison baits.
4. Seed saving: Platycodon grandiflorus has a long flowering period, with the main and lateral branches flowering sequentially, and the seeds also mature sequentially. When the flower buds form, remove the lateral branches and some top inflorescences to reduce nutrient consumption and ensure that the upper fruits are full. In September to October, when the capsules turn yellow, cut the stems and leaves, and after 2 to 3 days in a well-ventilated place, collect the seeds and dry them in the sun.
(4) Harvesting and processing
For 2 to 3-year-old Platycodon grandiflorus, dig them up before spring germination or after autumn withering. Remove the stems and leaves, clean the soil, and soak in clean water. While fresh, scrape off the outer skin (the outer skin of Platycodon grandiflorus is toxic and must be removed for medicinal use), wash clean, and dry in the sun. The yield is generally 250 to 300 kilograms of dried goods per mu.
The above comprehensive knowledge about the planting technology of Platycodon grandiflorus and the cultivation techniques and care tips provided by the Green Enthusiast Network are hoped to be of help to you.