The latest planting techniques of Angelica dahurica tutorial

Angelica dahurica dahuricae Radix angelicae Dahuricae Dahur Angelica dahurica

Angelica dahurica Roots stout, conical. Stem thick, hollow, finely longitudinally angled. Densely pilose near inflorescence. Leaves alternate; lower leaves large, 2-3-pinnately divided, margin densely acutely doubly serrate, eventually lobes ovate to long ovate, apex acute, base decurrent, petiole base enlarged into a large sheath; upper leaf lobes gradually simplified into sheaths. Inflorescences compound, rays 10-27; florets yellowish green; petals 5, ovate-lanceolate, apex retrorse; filaments slender, protruding beyond Corolla.

Land selection and preparation

Baizhi should be cultivated on flat land. It is better to have a deep, loose and fertile sandy loam. The previous crop is generally rice, corn, sorghum, cotton and so on.

After the previous crop harvest, apply rotten compost per mu, or barnyard manure 3000mur5000 kg, cake fertilizer 100kg, phosphate fertilizer 50kg as base fertilizer. Then ploughing, a depth of about 25 Mel 30 cm, leveling and raking fine, to make a high border. Generally, the border is 1.2-1.5 meters wide and 12-20 centimeters high. Sichuan producing areas generally do not make beds.

Planting technique of Angelica dahurica

1. Cultivate seeds. Angelica dahurica Sichuan chooses the main root is not branched, strong and disease-free Angelica dahurica is selected as the seed. Henan and Hebei selected root strip slender, Reed head small, no root, thin skin white, robust Angelica dahurica as species. Cut off the leaves before transplanting and plant according to the row spacing of 50-70 cm. Weeding and fertilization were carried out in winter and the following spring. The seeds mature one after another from June to July. When the pericarp turns yellowish green (Henan yellow-white), the seeds can be harvested in batches together with the fruit sequence, then spread out in a ventilated and dry place, cool and dry to thresh and remove impurities.

2. Sowing seeds. The sowing time is divided into autumn sowing and spring sowing, and autumn sowing is better. Henan autumn sowing before and after White Dew, Hebei between the End of Heat and White Dew, Sichuan from Bailu to autumnal equinox, and Zhejiang 10 days before Cold Dew. In the areas with higher temperature, it is suitable for the Autumn Equinox to Cold Dew, sowing too early, Angelica dahurica plants grow too vigorously in that year, some plants sprout and blossom in advance in the second year, and the Lignification of the roots can not be used medicinally. Sowing too late, less precipitation in winter, low temperature, not easy to germinate after sowing, affecting growth.

Broadcasting method. Strip sowing and hole sowing are available. Zhejiang, Henan and Hebei are strip sowing, with row spacing of 13-20-27 cm, trenching of 1-1.5 cm, and seed use of 1-1.5 kg per mu. After sowing, flatten the border and water it to keep the soil moist. Sichuan multi-purpose acupoint sowing, row spacing of 30-33 cm, acupoint spacing of 23-27 cm, the bottom of the acupoint should be flat. The sowing rate is 0.5-0.8 kg per mu. After sowing, they did not cover the soil, and then applied sparse human and animal dung water, about 1000 kilograms per mu, and then covered it with plant ash mixed with human and animal dung water, without exposing seeds. Then use a plank to suppress or tread lightly, so that the seeds and soil close to facilitate germination. The seedlings can emerge in 15-20 days.

Field Management of planting Angelica dahurica

1. Seedling. After emergence, the height of the seedling is 4-7 cm, and it can be carried out for 1-2 times. There are 5-8 seedlings planted in holes and 1 seedling every 7-10 cm in strip sowing. The seedlings were fixed according to the plant spacing of 10-12 cm. When interseedling, leave the strong seedling with bluish purple petiole or flat base of the plant, leaving it in the shape of triangle or plum blossom to facilitate ventilation and light transmission.

2. Loosen the soil and weed. When weeding is carried out with interseedling, weeding at seedling stage should be done by hand or shallow hoe, and weeding can be carried out later, so that the soil in the field is loose and free of weeds, which is beneficial to growth.

3. Fertilization. Generally, topdressing was carried out for 3-4 times, and the first and second times were carried out after interseedling and intertillage. 1500-2000 kg of sparse human and animal manure per mu each time. The third time after the seedling was fixed, 2000-3000 kg of human and animal manure water per mu and 3 kg of urea were added. Ching Ming Festival was fertilized for the fourth time before and after applying 2000-3000 kg of human and animal manure per mu and 150kg of plant ash. In Zhejiang, the first time was after seedling in March, the second time was after weeding in April, and the third time was fertilized before the Beginning of Summer. Ring fertilizer is usually applied in winter. Fertilization should pay attention to less application in that year, in order to prevent excessive growth, bolting and civilization in advance. It should be more in the second year, supplemented with phosphorus and potassium fertilizer to make the root stout.

4. Drainage and irrigation. Angelica dahurica During the growing period, if the weather is dry, it should be watered in time to ensure the needs of plant growth. when Rain Water is too much or stagnant water in the field, it should be drained in time to prevent disease or rotting roots.

Plant Diseases and insect pests Control of Angelica dahurica

1. Disease

① spot blight. Also known as white spot disease, leaf spot disease, is a kind of half-known bacteria in fungi. Damage the leaves. The plaque begins to be small, dark green at first, grayish white after enlargement, and when severe, the plaque converges into a polygonal spot. In the later stage, there were dense small black spots on the disease spot of the diseased leaf (that is, the conidium of the pathogen), and the leaf withered locally or completely. The disease usually occurs in May until the harvest. If there is too much nitrogen fertilizer, the plant is too dense, and it is also easy to get sick. Prevention and control methods. Strong and disease-free plants were selected to leave seeds. Angelica dahurica At the initial stage of the disease, the diseased leaves were removed and 1 ∶ 1 ∶ Bordeaux solution was sprayed for 1-2 times.

② purple stripe feather disease. It is a kind of fungus, which is often entangled and irrigated by purplish-red mycelium on the main root, causing the root epidermis to rot. In poor drainage or humid low-lying areas, the disease is serious. Prevention and control methods. Make a high border to facilitate drainage; use 70% pentachloronitrobenzene powder, 2 kg per mu plus 20 kg of plant ash, and spread the soil evenly, and prepare the soil for many times; you can also use 70% dimethazone wettable powder 2 kg per mu, 2000 kg of water to sprinkle the border surface, and then sow the soil after the soil is dry.

③ blight. It is a kind of half-known fungus in fungi, which mostly occurs in the case of overcast and rainy early spring, heavy soil viscosity and poor air permeability. At the initial stage of the disease, the yellow-brown disease spot appeared at the base of the seedling, and then the base showed a brown ring dry shrinkage depression until the plant died. Prevention and control methods. Select sandy loam for planting and remove stagnant water in time; at the initial stage of the disease, 5% lime water was used, once every 7 days, 3-4 times in a row, or 1 ∶ 25 pentachloronitrobenzene fine soil was scattered around the diseased plant.

④ black spot. Black disease spots appear on autumn leaves, prevention and treatment methods. Diseased leaves were removed or Bordeaux solution of 1 ∶ 1 ∶ 120 was sprayed twice.

2. Insect pests

Yellow-winged fennel borer, yellow Phoenix butterfly, aphid, red spider, harmful to leaves. Prevention and control methods. Spray with 90% crystal trichlorfon 1000 times or 40% dimethoate 2000 times.

① Black Tsui. Harms the roots. Prevention and control methods. The soil around the root of the plant was irrigated with 1000 times of 25% ammonium parathion EC.

② heart borer. Bite the seed, often make the seed grain no harvest. Prevention and control methods. Spray with 1000 times of 90% crystal trichlorfon.

③ ground tiger. Harms the young stem of the plant. Prevention and control methods. To kill with artificial hunting or poison bait.