Planting technique of Radix Isatidis

Isatis root, also known as Isatis indigotica and indigo, is a traditional Chinese herbal medicine in China. We are familiar with it. It mainly treats cold, fever, sore throat and other symptoms. It is often taken when I was a child. Banlangen market demand is great, the market prospects are broad, in all parts of our country with symptoms, with the increase in demand, its planting area is not only expanding, together with the small series to understand the planting technology.

1. Land selection and fertilization

Banlangen is a biennial herb, in the first year of the cluster on the ground, the second year began to sniffle fruit, it likes warm weather, cold, afraid of waterlogging. Therefore, when planting, you should choose sandy soil with deep soil layer, loose and fertile soil, good drainage or soil rich in humus. Remove weeds and residual plants from the plot, apply 3000 kg of farm manure per mu in combination with ploughing, rake fine and level, and then make ridges or ridges.

2. Sowing

Mature seeds are collected in May, dried, stored, sown in the following year, soaked in warm water of 40 DEG C for 3-4 hours before sowing, taken out, dressed with plant ash or other medicaments, and sown. Sowing time is selected in late April, 2cm deep furrows are opened on the ridge surface or ridge, the row spacing of plants is reasonably controlled, the seeds are evenly spread in the furrows, then the soil is covered and the soil moisture content is maintained at 60%-70%, and the seedlings can emerge after one week.

3. Seedling management

When the seedlings grow to 4-5cm, they should be fixed. When fixing seedlings, they should be combined with loosening soil and weeding. The spacing between fixed seedlings should be controlled at 3-4cm. After fixing seedlings, the soil should not be too wet, so as to promote the roots to tie down to find water, which is conducive to the growth of roots. In the later stage of growth, it is necessary to keep the soil moist at all times, promote the absorption of nutrients by seedlings, and grow as soon as possible. In the rainy season, drainage and waterlogging prevention measures should be taken to avoid excessive accumulation of water leading to rotten roots.

4. Field management

During the whole growth period, it is necessary to cultivate and weed three times, once in the seedling setting, the general soil loosening depth is 15-20cm, at this time weeding is not suitable to use herbicides, it is recommended to manually weed. The second time is at the end of June, when the soil is loosened at a depth of 20-25cm, and the third time is at the end of September. If herbicides are used in the latter two times, it is recommended to use less harmful pesticides. After each leaf cutting, topdressing should be applied once to promote plant recovery as soon as possible. Generally, 40-50 kg ammonium sulfate and 10 kg calcium-phosphorus compound fertilizer should be applied every mu. It is recommended to water immediately after fertilization to dilute fertilizer concentration and accelerate plant absorption.

The above is isatis root planting technology, I hope to help you, want to know more about herbal planting knowledge, please pay attention to us.