The planting method of Radix Isatidis

Banlangen should be very familiar with everyone. It is a very famous traditional Chinese medicine. The Banlangen granule that we often eat is processed from Radix Isatidis. In China, the consumption of Radix Isatidis is very large, and every cold high incidence period is in short supply. Planting Radix Isatidis is also a good idea to start a business.

Planting method of Radix Isatidis

Water should be watered once a week before sowing to ensure the moisture needed for the seeds of Radix Isatidis to germinate and take root. There are many sowing methods of Radix Isatidis, but there are two commonly used methods: strip sowing and hole sowing.

The row spacing of 30 cm is adopted in strip sowing, and the sowing rate is about 3 kg per mu, while the row-plant spacing of 30 × 20 cm or 30 × 30 cm is used in hole sowing, and the amount of seed used is less, between 1.5 and 2 kg per mu. Sowing depth is 3 cm, after sowing, then cover a layer of fine soil, cover soil, the thickness is about 1 cm, and finally cover the border with plastic film to moisturize. Due to the strong wind in spring, in order to prevent the wind from blowing up the plastic film, after the plastic film is covered on the border, it should be pressed not only with soil around, but also in the center of the film.

How to plant Isatis root

1. Seed selection

The seeds of Radix Isatidis should be harvested the year before, with new black seeds on the seed coat. The maturity of such seeds is good, and the germination rate can be guaranteed to be more than 95%. And such seeds will not blossom in the same year after sowing; and if you choose seeds that have been stored for many years, not only the germination rate is low, but also easy to blossom in the same year, affecting the yield and quality of Radix Isatidis.

2. Seed treatment

After the seeds are selected, the seeds should be treated before sowing in order to improve the germination rate of Radix Isatidis seeds. Soak the seeds in clean water for 12-24 hours. On the one hand, it can remove the grass shavings and blighted seeds mixed in the seeds of Radix Isatidis, and on the other hand, it can soften the seed coat of Radix Isatidis, which is conducive to budding. Soak it out and dry it, and then you can sow the seeds.

3. Sowing time

In the planting process of Radix Isatidis, there are strict requirements on sowing time and sowing method. First of all, let's know the time of sowing. For the spring sowing of Radix Isatidis, the northern region generally sows in early April, while the southern region can advance appropriately, but it is required to sow only when the local temperature is stable above 12 ℃, which is beneficial to the deep root system and prolong the growth period.

Field management

1. Seedling setting: after emergence, when the seedling height is 7: 8, the seedling is fixed according to the plant distance of 6: 10, to be weak and strong, and to make up for the lack of seedlings. When the seedling height is 10-12 years old, combined with ploughing and weeding, the seedlings are fixed according to the plant spacing of 6-9 rows and the spacing of 10-15.

2. Intermediate ploughing and weeding: shallow ploughing after seedlings are unearthed, and middle ploughing after seedling setting. In the period of 3-5 leaves of weeds, fine grasses can be sprayed with chemical herbicides to control Gramineae weeds, 40ml per mu and 50kg spray with water.

3. Topdressing and watering: those who mainly harvest green leaves should be topdressing three times a year. The first time is after planting, shallow ditches are opened between rows, 10~15kg urea is applied per mu, and timely watering and moisturizing. The 2.3 time is topdressing after the big green leaf is harvested, in order to make the plant grow healthily and exuberantly, we can use farm fertilizer to apply phosphorus and potassium fertilizer properly; those who harvest plate blue root mainly, do not cut the big green leaf in the period of vigorous growth, and apply less nitrogen fertilizer, apply phosphorus and potassium fertilizer and plant ash properly, in order to promote root growth and increase yield.

Pest control

Diseases: there are mainly downy mildew and root rot. Downy mildew leaves showed light green disease spots, white or gray mildew was produced on the back of the leaves, and died in severe cases; root rot mostly occurred in the rainy season, resulting in root rot, resulting in the death of the whole plant. Prevention and control methods: give priority to agricultural control, reasonable rotation and close planting with Gramineae and leguminous plants, improve ventilation and light transmission conditions, and find diseased leaf disease plants removed out of the field in time, concentrated and buried deeply; 65% zinc or 77% can also be sprayed or irrigated with wettable powder.

Insect pests: there are mainly cabbage insects and diamondback moth. Pieris rapae bites leaves, causing holes and holes in the leaves, leaving only veins in serious cases; Plutella xylostella bites leaves in the early stage, resulting in gaps and holes in the later stage of the "skylight", leaving only reticular veins. Diflubenzuron 3, BT emulsion and 1000-fold spray were used to control trichlorfon.

Through the above content, I believe you have a better understanding of the planting technology of Radix Isatidis. In our country, almost every family will prepare a large bag of Radix Isatidis to prevent a cold and cough. Planting Radix Isatidis has high output and less investment, but the profit is very considerable, and the planting prospect is even broader.