Seed price and planting method of Codonopsis pilosula

Codonopsis pilosula is a perennial herb of Platycodon grandiflorum family. There are a large number of cultivation in various parts of our country. In ancient times, Codonopsis pilosula produced in Shangdang area of Shanxi Province is the top grade. It has the effect of tonifying the middle and replenishing qi, invigorating the spleen and lung, and the effect is similar to that of ginseng, but the drug power is weak. The treatment of general deficiency syndrome can be used instead of ginseng. Let's take a look at the seed price and planting method of Codonopsis pilosula.

How much is the seed of Codonopsis pilosula per jin?

The price of Codonopsis pilosula seeds is about 60,100 yuan per jin, but it varies greatly due to different seed quality, variety, producing area, market and so on. Codonopsis pilosula likes temperature and cool climate, cold tolerance, seedlings like moisture, shade, fear of strong light, large seedlings to adults like sufficient sunshine, suitable for cultivation in sandy loam with deep soil layer, good drainage, loose soil and rich in humus. Seed direct seeding or seedling transplanting is commonly used in production, but seed direct seeding is better.

Sowing method of Codonopsis pilosula

1. Sowing time: Codonopsis pilosula can be sowed in winter and spring.

① winter sowing: sowing in winter between "Frosts Descent" and "the Beginning of Winter". The seeds do not need to be treated in the same year. After winter rain and snow infiltration, the seedlings emerge early in the second year, grow vigorously, and have strong drought resistance. However, because the seeds are small and the soil cover is shallow, it is easy to blow away the seeds in case of strong wind.

② spring sowing: before and after spring sowing in "the Spring Equinox", the full and mildew-free seeds were kneaded in 40 ℃ warm water for about half an hour, covered with wet sacks, then placed at 25: 30 ℃ to accelerate germination, washed with 40 ℃ in the morning and evening to keep moist, and sowed after 4 to 5 days of germination.

2. Sowing methods: there are two kinds of Codonopsis pilosula: strip sowing and sowing.

① strip sowing: in the finished border field, according to the row spacing of 15cm to 20cm, open a ditch about 1cm deep, mix the treated seeds with fine sand, scatter them in the ditch, cover the soil flat, step on it, and cover with 1cm thick fine sand.

② sowing: on the finished border surface, mix the seeds with 10 times fine sand, spread evenly on the border surface, use iron rake to combine the seeds with the soil, then flatten the border surface, suppress it, and then cover it with 1 cm thick fine sand.

3. Seedling management: the growth of Codonopsis pilosula seedlings is weak and poor management is easy to die. It is necessary to keep the soil moist and gradually remove the mulch when the seedling is 5 cm high. At the same time, topdressing should be carried out according to the seedling condition.

Planting techniques of Codonopsis pilosula

1. Land selection and land preparation: Codonopsis pilosula planting land should choose half-shady and half-sunny slope, loose and fertile sandy loam and places close to the water source, applying about 1500 kilograms of ring manure or compost per mu, and then ploughing, raking fine and leveling to make flat or high beds.

2. timely seedling: Codonopsis pilosula seedlings can be transplanted in one year, pay attention to prevent root damage when raising seedlings, and get rid of sick and residual seedlings at the same time, but they should not be carried out on rainy days. The seedlings transplanted in autumn will be planted, and those planted in the next spring will stay in the seedling field for the winter.

3. Planting method: it is better to plant Codonopsis pilosula in spring. When planting, it is better to plant in a ditch with a row spacing of 20 cm 25 cm and a depth of 17 cm 20 cm, then tilt the furrow according to 7 cm 10 cm plant spacing, the bud head is up, and the thickness of the covered soil is more than 5 cm.

4. Intermediate ploughing and weeding: Codonopsis pilosula seedlings begin to loosen the soil and weed as soon as they are unearthed, and pay attention to cultivating the soil to prevent the Reed head from exposing the ground, and it is appropriate to loosen the soil so as not to hurt the root, and there is no need to plough and weed again after the ridge is closed.

5. timely topdressing: after transplanting, Codonopsis pilosula was topdressing rare manure and urine once before setting up a frame, 1000-1500 kg per mu or 10 kg of urea, 10 kg of ammonium sulfate and 10 kg of passing stone. After mixing the two, a 6 cm shallow ditch was opened in the middle of the row, and the soil was covered strictly after application.

6, drainage irrigation: Codonopsis pilosula transplanting drought timely watering, can not be irrigated or less irrigated after survival, so as to avoid excessive consumption of nutrients, pay attention to drainage in the rainy season to prevent rotting roots.

7. Build a climbing frame: when the height of Codonopsis pilosula seedlings is about 30 cm, the frame should be flexibly mastered according to the local specific conditions, in order to make the ventilation and light, fully stretch the branches and leaves, increase the photosynthetic area, make the plant grow strong, and improve the disease resistance and yield.

8. Harvest and processing: Codonopsis pilosula is generally harvested in the autumn of the second year after transplanting, dig deeply and dig out the roots, do not break or hurt the root bark, so as not to flow out white milk and reduce the quality. After shaking off the soil, the planed roots are graded and transported back for processing.

Prevention and control of diseases and insect pests of Codonopsis pilosula

1. Codonopsis rust

[harm] the damage to stem, leaf and receptacle began in early May and was serious from June to July. At the initial stage of the disease, there were light yellow disease spots in the lower leaves, leaf back uplift, obvious yellow halo in the periphery of the disease spots, and a large number of spores in the later stage.

[prevention and control] clean up the fields in time after withered seedlings and burn the diseased and residual plants above ground. At the initial stage of the disease, the patients were sprayed with 1000 times of 25% verapamil and 97% of sodium dipropionate once every 10 days for 2 times in a row.

2. Root rot

[harm] the plant was damaged for more than two years, and the disease was serious in the rainy season from June to July. The near ground fibrous root and lateral root turned dark brown, the whole root gradually rotted like water stain, and the aboveground part turned yellow from bottom to top until withered and died.

[prevention and control] during soil preparation, more than 50% carbendazim was used to disinfect the soil, and it was found that the diseased plants were removed and burned in time, and the diseased points were irrigated with 1% lime water. During the onset of the disease, Bordeaux solution was sprayed with 120 times Bordeaux solution or root irrigation once for 7 days, several times in a row.

3. Underground pests

The main underground pests of Codonopsis pilosula are ground tiger, grub, mole cricket and so on.

[control] 50% zinc parathion EC 200 times or with 90% trichlorfon 1000 times 1500 times liquid, seedling damage with 90% crystal trichlorfon 100 grams and fried rapeseed cake 5 kg poison bait.

4. Aphids

[harm] the harm is serious in times of drought.

[control] 2000 times of 40% dimethoate EC or 1000-1500 times of 80% dichlorvos emulsion, once every 7 to 10 days, several times in a row.

5. Red spider

[harm] Red spiders harm leaves during drought and high temperatures.

[control] 50% fenitrothion 1000-2000 times solution, or triclofenac wettable powder 1500-2000 times liquid spray.