What is the latest price of Corydalis yanhusuo seeds? With planting methods

Corydalis yanhusuo is one of the major commonly used traditional Chinese medicines, also known as Yanhusuo, Xuanhusuo, Yuanhusuo, etc. It is a perennial herbaceous plant of the genus Corydalis in the Papaveraceae family, and together with Atractylodes macrocephala, peony, and Fritillaria it is known as one of the “Zhejiang Eight Flavors”. It is produced in Anhui, Zhejiang, Jiangsu, Hubei and other places, and has extremely high cultivation value. Now let us take a look at the price of Corydalis yanhusuo seeds and its planting methods!

How much is a jin of Corydalis yanhusuo seeds?

The price of Corydalis yanhusuo seeds is about 25 to 35 yuan per jin, but the price varies greatly depending on the seed variety, quality, place of origin and purchase quantity. Corydalis yanhusuo is mainly produced in Anhui, Jiangsu, Zhejiang, Hubei, Henan and other places. In production there are large-leaf Corydalis yanhusuo and small-leaf Corydalis yanhusuo. Large-leaf Corydalis yanhusuo is suitable for close planting and has high yield, while small-leaf Corydalis yanhusuo has large tubers of high grade but slightly lower yield, so when buying Corydalis yanhusuo seeds one should distinguish between them.

Sowing methods for Corydalis yanhusuo

1. Land preparation and fertilization: Corydalis yanhusuo likes a warm and humid climate, and is suitable for sandy loam soil that is well drained, fertile, loose and rich in humus. Before the Autumn Equinox, plow and harrow the land 3 to 4 times, apply decomposed compost or barnyard manure as base fertilizer, level and harrow fine, and open drainage ditches 30 cm wide around the perimeter.

2. Timely sowing: Corydalis yanhusuo should be sown from late September to early October. Sowing should be early rather than late. When sowing, use wide-bed strip sowing with the seed buds pointing upward, and successively open furrows, sow, fertilize and cover soil at the same time for strip sowing. The sowing rate is 800 to 1000 kg per hectare.

Planting methods for Corydalis yanhusuo

1. Reasonable fertilization: It takes more than 100 days from sowing to emergence for Corydalis yanhusuo. Winter fertilizer is generally applied around the Start of Winter, pouring 1000 to 1500 kg of human urine per mu, or additionally applying 50 kg of calcium phosphate and 40 kg of ammonia water, combined with loosening the soil, weeding and clearing ditches to cover soil.

2. Loosening soil and weeding: Around the Start of Winter, combine fertilization with one shallow loosening of the soil to remove weeds. After emergence, pull out weeds promptly. In early spring, pull them as soon as they appear. From April to harvest, even if there are weeds they must not be pulled, so as not to loosen the underground stem nodes and affect yield.

3. Irrigation and drainage: If winter drought occurs during Corydalis yanhusuo cultivation, appropriate irrigation is needed. In the evening, let water into the bed furrows; the water must not exceed the bed surface, and it should be drained the next morning. The peak growth period coincides with continuous spring rain, and high field humidity can easily lead to downy mildew, so ditches should be cleared and drainage done promptly.

4. Removing flower buds: In Corydalis yanhusuo cultivation, to reduce nutrient consumption and promote tuber growth, the flower buds must be removed before flowering. In the early full-bloom stage, 40% ethephon at 1000 ppm can be sprayed. After bud removal, spraying 0.5 to 1 ppm triacontanol 1 to 2 times can increase tuber yield by more than 25%.

5. Harvesting and processing: Corydalis yanhusuo is generally harvested from April to mid-May, with a fresh stem yield of 300 to 400 kg per mu. After harvesting, grade them into large, medium and small, wipe off the outer skin, wash off the soil, put them into water at 80 to 90 degrees C and boil, and when the cut surface of the tubers is yellow, take them out and sun-dry.

Pest and disease control for Corydalis yanhusuo

1. Downy mildew: Sow with seed treatment, plant reasonably densely, strengthen management, and in the early stage of disease spray 72% Curzate wettable powder at 800 times dilution, or 40% phosethyl-Al wettable powder at 250 to 300 times dilution, or 75% chlorothalonil wettable powder at 600 times dilution.

2. Sclerotinia disease: In the early stage of disease, spray 50% Sumilex or 50% iprodione or 50% vinclozolin wettable powder at 1000 to 1500 times dilution, or 70% thiophanate-methyl wettable powder at 600 times dilution and 50% carbendazim wettable powder at 500 times dilution.

3. Rust disease: Rust mainly harms stems and leaves, and is prone to occur when the climate is humid in the mid-growth period. For control, increase phosphorus and potassium fertilizer, drain promptly in the rainy season, and in the early stage of disease spray 97% fenaminosulf at 300 times dilution, once every 7 days, for 2 to 3 consecutive sprays.

4. Insect pests: Pests include cutworms and white thread worms. Cutworms like to eat Corydalis yanhusuo stems, and white thread worms like to eat Corydalis yanhusuo tubers. If seedlings and leaves are found withered, there are pests, and they can be caught by gently turning the soil in the morning, or when preparing the land apply 3 jin of 6% benzene hexachloride powder per mu.