How to grow Codonopsis pilosula

Codonopsis pilosula is a very common traditional Chinese medicine, which can enhance the body's resistance, nourish blood and replenish qi, lower blood pressure and treat gastric ulcers. At present, Codonopsis pilosula is mainly produced in southwest, Hebei, northeast and Inner Mongolia. It is generally planted in spring and autumn, preferably in March and April and October and November every year, so how can Codonopsis pilosula be planted in high yield? So let's take a look at it today.

1. Land selection and preparation

According to the relevant investigation, the soil bacteria in the general high-yield Codonopsis pilosula planting land is sandy loam, and the soil structure is good, rich in organic matter, sufficient nutrients, good water storage and drainage, relatively high topography, and will generally be selected in the semi-sunny slope. at the same time, continuous cropping can not be carried out. Soil preparation is generally carried out by deep ploughing combined with base fertilizer, which is mainly based on farm manure or organic fertilizer, which is spread evenly and then ploughed deeply, which can better improve the fertility of the soil, and finally make a furrow and wait for sowing.

2. Seed selection and budding

The quality of seed selection directly determines the yield and quality of Codonopsis pilosula, so when selecting seeds, we should try to choose seeds with full particles, bright color and no diseases and insect pests, and then put the selected seeds in the sun for a day or two. after the sieve cup, you need to put the seeds in a bag and soak the seeds in warm water. after soaking for one day, the seeds are removed and placed at a temperature suitable for seed germination. Usually most of the seeds will sprout in a week or so, and then you can sow the seeds.

3. Seedling raising and transplanting

There are two methods for planting Codonopsis pilosula, which are direct seeding and seedling transplanting. Direct seeding is to sow seeds on the ground with a distance of 30 cm between rows and 10 cm between plants. However, in order to ensure the emergence rate and yield of Codonopsis pilosula, now we usually use the method of seedling transplanting, first of all, we need to sow the treated seeds on the seedling bed. After a period of careful management to grow seedlings, it is best to transplant in March, and when transplanting, it is best to transplant with soil, so that the survival rate will be higher, and the transplanting density can be divided into several kinds. They are 35, 30, 25 cm between rows, and 15, 10, 5 cm between plants. Specific implementation needs to be carried out according to the degree of fertility of the planting land and the purpose of planting.

4. Field management

First of all, we need to check seedlings, inter-seedlings and replenish seedlings in the field, and then weed in time, usually about a month after planting. Weeding in the later stage needs to be carried out according to the growth of Codonopsis pilosula and the growth of weeds in the field. Secondly, in order to keep the growth of the branches and leaves of Codonopsis pilosula, the tips of some branches and leaves need to be removed appropriately, because the branches and leaves of Codonopsis pilosula can grow to at least one meter, so we can build a frame when it grows to about 25 centimeters. this can reduce diseases and enhance field permeability. Finally, topdressing and watering should be carried out in time, and specific water and fertilizer management should be carried out according to the different growth periods of Codonopsis pilosula, not partial application of nitrogen fertilizer, and timely drainage.

5. Pest control

Codonopsis pilosula is one of the medicinal materials with strong resistance, generally, there will not be any diseases and insect pests when field management is in place, but we still need to control root rot and rust, both of which are caused by high temperature and humidity. Carbendazim can be used for control. The most important pests are some underground pests and red spiders and mice, underground pests can be irrigated with trichlorfon, while red spiders can be controlled with thiazox, and rodent pests can only be killed by trapping.