Planting techniques of Solanum nigrum

Solanum nigrum is a perennial herb of Orchidaceae and one of the famous traditional Chinese medicines in China. Its whole herb can be used as medicine and has the effects of clearing heat and detoxification, relieving pain and relieving knots, relieving cough and clearing lung. Solanum nigrum has always been in short supply, and it is a traditional export medicine with high economic benefits. Due to the scarcity of wild resources, there have been artificial introduction and planting in some parts of our country. Let's take a look at the planting technology of Solanum nigrum together with the editor.

1. Land selection and preparation

Sunflower is fond of shady and humid environment, so it is most suitable to choose under-forest cultivation, the soil should choose red soil rich in humus, and clay is not suitable for planting. As the root distribution of Solanum nigrum is relatively shallow, it is not suitable to plough too deep during soil preparation, so as not to affect the root growth, it is appropriate to use 15-20 cm. Its growth cycle is relatively short, so it is necessary to apply basic fertilizer when ploughing, applying 2000-3000 kg of rotten farm manure per mu, raking fine and leveling to make high beds.

2. Methods of reproduction

The seed germination of Solanum nigrum is weak, and it is rarely propagated with seeds in production. Generally, bulbs are used to propagate, and the seeds mentioned in planting generally refer to its bulbs. Before the bulbs germinated before and after the Qingming Festival, they were dug up and hung in a ventilated place for 1-2 days according to their size. Choose to sow in a sunny day, using the method of hole sowing, open holes in the border according to the row spacing of 12 × 18 cm or 15 × 20 cm, plant one plant per hole, and the sowing rate of one handful is 8000-10000 plants per mu. Cover the soil after planting, and then cover the border with a layer of straw or fallen leaves, heat preservation and moisturizing, in order to facilitate seedling emergence.

3. Field management

The root system of Solanum nigrum is shallow, so there is no need for intertillage after emergence, only weeding is needed. Weeding is recommended to pull weeds manually. In May-June is the growing season of sunflower, at this time to strengthen fertilizer and water management, this time to apply clear dung water 1-2 times, each time about 150-200 kg per mu, can also be supplemented with 5 kg compound fertilizer to promote rapid plant growth. Sunflower likes a humid environment, so it is necessary to keep the soil moist and drain in time in the rainy season to avoid rotting roots. After bolting and flowering, the bolting should be removed in time in order to concentrate nutrients with bulbs and leaves and increase yield.

4. Pest control

The main disease of Solanum nigrum is spot disease, which mainly harms leaves and has a great effect on yield. Carbendazim can be sprayed every 7-10 days for 2-3 times. The main insect pests are slugs, which are also harmful to leaves, which can be sprayed with Mida or control dry snails, and the effect is better.

The above is the introduction of the planting technology of sunflower, hope to help you, want to know more related knowledge, please follow us.