1、 Basic introduction

Solanum nigrum is an annual herb of Solanaceae, also known as bitter cold dish and ordering vegetable. It is mainly distributed in southern China, such as Yunnan, Guangxi and so on. Solanum nigrum is a delicate herb with a height of about 100 cm. Its rhizome is basically hairy, its leaves are oval, its inflorescence appears in a white umbrella shape, its flowers are small, and its fruit is black purple spherical

2、 Curing method

1. Temperature: Solanum nigrum is suitable to grow in the temperature environment of 22 to 30 degrees Celsius, and when it blooms, it is suitable to grow in the temperature of 15 to 20 degrees Celsius

2. Soil: Solanum nigrum has high requirements for soil, but it needs to grow in a soil rich in organic matter, water and fertility to make it grow better. If it is in the cohesive soil with poor ventilation performance and insufficient organic matter, it is easy to lead to its poor development

3. Light: Solanum nigrum likes an environment with plenty of light. It has negative resistance, but it can't be out of light for a long time. In its growth period and flowering period, it is necessary to ensure sufficient sunshine, but the light is not easy to be too strong

4. Watering: it must be watered properly. It is afraid of both waterlogging and drought. Therefore, it is necessary to grasp the amount of watering. When it is cold in winter, we should pay more attention to controlling water volume

5. Fertilization: for the small flower Solanum nigrum planted in a large area, it can be fertilized once every ten days. Fertilization is mainly foliar fertilizer, and additional fertilization is required after harvest

3、 Maintenance skills

1. Seedling breeding: Solanum nigrum has high requirements for soil, so it is necessary to choose a fertile land with rich organic matter and loose soil as the seedling bed. Water thoroughly before sowing, and then mix the seeds with fine sand. After sowing, cover it with a layer of soil layer about 0.5cm thick. Keep the soil moist enough to sprout in about 5 to 7 days

2. Pruning and coring: when the plant grows to about 8 to 10 knots, the apical center can be removed to allow sufficient growth space for lateral buds. When there are about 20 side buds, prune them, leaving only five centimeters to promote the growth of new branches, and the dead leaves also need to be removed in time

3. Proper topdressing: in order to keep the new shoots fresh and tender and promote their continuous growth of new buds, topdressing needs to be carried out after each harvest to promote their growth and development. This can also enhance its disease resistance and improve the quality of Solanum nigrum