Detailed Explanation of Aconitum kusnezoffii Planting Techniques and Management Methods

Aconitum kusnezoffii is a plant whose tuberous root can be used as medicine and can be used to treat rheumatic diseases. Today let us briefly learn about the planting techniques of Aconitum kusnezoffii.

Planting techniques of Aconitum kusnezoffii

1. Site selection and land preparation

Aconitum kusnezoffii is a tuberous root crop, so choose sandy soil with deep soil layers, loose and fertile texture, convenient water sources, and good drainage and irrigation. Semi-sunny shaded hillsides or semi-shady wet plots are both acceptable. Potatoes and rapeseed can be used as previous crops. After the previous crops are harvested, plowing and soil heating should be carried out in time to fully mature the soil, increase fertility, and reduce diseases and insect pests; before sowing or planting, plow and harrow twice more, and apply sufficient base fertilizer at one time in combination with plowing, remove weeds, and after several days of sun exposure, break up large clods of soil so that the soil is fully fine and loose. Make beds 1.2-1.5 m wide and 12-20 cm high. Usually, beds perpendicular to the slope direction with a north-south orientation are best. Open a 30-40 cm ditch between two beds to facilitate management and drainage and irrigation needs.

2. Planting methods

1. Direct seed sowing method: rake the selected land level and fine, and make beds as seedbeds; sow in rows on the seedbed with a row spacing of 40 cm, using 500-700 g of seed per mu, mix the seeds into 200 kg of coarse sand and stir evenly, sow 0.3 kg of the seed-sand mixture per square meter, cover with 0.5-0.7 cm of soil after sowing, and finally cover with grass.

2. Whole tuberous root sowing method: select the tuberous roots of vigorous plants with no diseases or insect pests and typical traits and sow the whole roots. The suitable weight of a single seed tuberous root is 2-3 g, and the sowing rate is 50-70 kg per mu; before planting, soak the seeds in a 200-fold solution of 50% carbendazim for 10 minutes, dry them, and then sow. Always use furrow sowing. Apply decomposed farmyard manure per mu, then shallow hoe so that soil and fertilizer are combined, then cover with a layer of 2-3 cm of fine soil, and water in time after covering with soil.

3. Tuberous root bud cutting method: after digging, use a sterilized knife to cut off the upper terminal buds of larger Aconitum kusnezoffii tuberous roots, about 2-3 cm, for use as seed. Sprinkle plant ash or use a fungicide on the cut surface for surface disinfection, dry the surface, and then sow. The lower part of the cut root tuber is used for commercial processing; after sowing, the soil surface needs to be covered with shade material, such as rice straw or pine needles. Before emergence, it is essential to ensure that the soil remains moist, avoiding sunburn during emergence.

3. Transplanting

15-20 days after emergence, apply dilute nitrogen fertilizer to increase seedling growth speed and resistance, gradually remove the ground cover, and after the seedlings emerge evenly, apply fertilizer once at intervals. The principle of fertilization is small amounts and multiple applications; when the seedlings are 4-5 cm tall, have 5-7 basal leaves, dark green leaves, and 2-3 tuberous roots, they can be transplanted. The usual transplanting period is from Cold Dew to Frost's Descent. Granule transplanting can be adopted, or they can be stored in a cool room until mid-December for transplanting; when transplanting, they should be graded by large, medium, and small sizes.

4. Field management

1. Irrigation and drainage: Aconitum kusnezoffii fears both drought and waterlogging, and has different water requirements in different seasons and different growth stages; after emergence, the soil must be kept moist throughout the entire growth period. Too dry or too wet will cause poor growth of Aconitum kusnezoffii. In summer, attention should be paid to drainage.

2. Topdressing: the main harvested part of Aconitum kusnezoffii is the rhizome, so timely and appropriate topdressing is especially important for the growth and development of Aconitum kusnezoffii. Generally, topdressing is carried out 2-3 times during the whole growth period, and topdressing should be determined according to seedling conditions. If the seedlings are small and weak, appropriately increase nitrogen fertilizer; if the seedlings are crisp and tender, mainly apply fertilizer with high phosphorus and potassium content.

3. Intertillage and weeding: during intertillage, according to the root growth of Aconitum kusnezoffii, use the method of first deep cultivation and then shallow cultivation, and deep cultivation farther away and shallow cultivation nearby.

4. Trellising and earthing up: Aconitum kusnezoffii is a vine plant. For high yield, trellising must be carried out to promote the growth of adventitious roots

5. Topping and pruning: in order to inhibit excessive vegetative growth of the aboveground part of Aconitum kusnezoffii, except for seed-bearing plants, topping and pruning should be carried out so that nutrients are concentrated in the underground tuberous roots for development and swelling, thereby increasing yield

5. Pest and disease control

The main diseases are downy mildew, powdery mildew, and root rot, and the main insect pest is cutworm; in the choice of drugs, it should be ensured that the produced medicinal material raw materials are pollution-free and that pesticide residues are kept within a very safe range.

6. Harvesting and processing

1. Seed harvesting: harvest from September to November when the fruit is dark brown but has not opened. After harvesting, dry the fruit shells in the sun, tap lightly in a plastic bag, and the seeds will break out of the shells. Remove impurities and store in a cloth bag in a cool, dry place.

2. Tuberous root harvesting: usually dug after the aboveground part withers from the end of November to the beginning of December. If harvested after the tuberous roots sprout, it will affect yield and quality; the method is to dig a ditch 30 cm deep with a hoe on one side of the field, then turn and dig in sequence. After digging, the large ones are for commercial sale and the small ones are retained for seed; be careful not to damage the tuberous roots when digging. After digging, remove stems, leaves, and soil, place them at the edge of the field to dry in the sun so that they lose part of their water, and when they are slightly soft, take them back, soak and wash off the surface soil with water, and after cleaning, spread them out on a bamboo sieve mat to dry in the sun.

Planting Aconitum kusnezoffii requires a certain amount of patience. Interested friends can first consult experienced people before considering it.