Key Points of Platycodon grandiflorus Cultivation Techniques and Yield Introduction
Platycodon grandiflorus should be planted in relatively loose soil, and the planting site needs a clean water source nearby with a good drainage and irrigation system. It can be planted in spring, autumn and winter, and the best time is mid-September and around the Beginning of Spring. After planting, just carry out field management and disease control work well. The average annual yield of cultivated Platycodon grandiflorus is more than 1000 kg, and in some places the yield is even higher.
I. Platycodon grandiflorus Cultivation Techniques
1. Land selection and preparation
The root capacity of Platycodon grandiflorus is not strong, so when planting it needs to be grown in soil with strong permeability and relatively loose texture. The planting site needs a clean water source nearby with a good drainage and irrigation system, and it is best on a hillside with half shade and half sun. After selecting the land, prepare it in time. Because the roots of Platycodon grandiflorus are relatively long and thick, ridges need to be made when preparing the land. Deeply plow and cultivate the soil, then open furrows, pile the soil from the furrows to both sides, and make field ridges 2 m wide to provide a good growing environment for Platycodon grandiflorus.
2. Timely sowing
Except in the high-temperature environment of summer, when Platycodon grandiflorus is not suitable for germination and seedling emergence, it can be sown in the other three seasons, but the best time is mid-September each year and around the Beginning of Spring. Sowing at this time helps promote the seeds to take root and germinate, enhances the growth ability of the seedlings, and improves yield and quality. When sowing, it is best to use the drill sowing method. After sowing, cover in time with fine soil and plastic film to improve the soil's water and fertilizer retention, prevent the loss of water and fertilizer, and avoid affecting the germination and seedling emergence rate of the seeds. After the seedlings emerge, uncover the plastic film in time to ensure the normal growth of the seedlings.
3. Field management
After the seedlings break through the soil and grow to about 2 cm, observe the growth condition and density of the seedlings, and do a good job of thinning and spacing the seedlings in time. Then, after the seedlings grow again, final thinning can begin. When finalizing the seedlings, control the spacing well to prevent excessively dense growth. When thinning, pull out the dead and weak seedlings, then replant to ensure yield. During the seedling stage of Platycodon grandiflorus, weed regularly to prevent excessive weeds from causing nutrient deficiency in Platycodon grandiflorus. After weeding, topdress in time. Well-rotted farmyard manure can be used, and later, topdress in good time according to the growth condition of Platycodon grandiflorus.
4. Disease control
What Platycodon grandiflorus fears most is various diseases and insect pests. When diseases and insect pests are severe, they can cause a total crop failure of Platycodon grandiflorus. Common diseases of Platycodon grandiflorus include leaf spot, and insect pests include aphids. No matter what kind of disease or insect pest it is, the harm to Platycodon grandiflorus is very serious, so field management must be strengthened, disinfection should be carried out regularly, the nutrients in the fertilizer should be well controlled, the disease resistance of Platycodon grandiflorus should be enhanced, immunity should be improved, and the incidence rate should be reduced. After disease occurs, pull out the diseased plants in time, check the specific disease or insect pest, and then use the corresponding treatment method for control to reduce losses to a minimum.
II. Platycodon grandiflorus Cultivation Yield
The average annual yield of cultivated Platycodon grandiflorus is more than 1000 kg, with high yields reaching 1500 kg. In Niuyingzi Town, Chifeng, Inner Mongolia, the fresh Platycodon grandiflorus yield per mu can reach 1500 kg-1800 kg, and individual plots can reach as high as 2000 kg.