5 Steps to Autumn Sowing

In recent years, Radix angelicae dahuricae dahur Angelica dahurica The standardized cultivation techniques are introduced as follows:

Land selection and preparation

Baizhi likes the warm, humid and sunny environment, so it is appropriate to choose sandy soil with high dry terrain, deep soil layer, loose and fertile soil and good drainage. Combined with soil preparation, 2000 kg of compost (or 25 kg of compound fertilizer and 50 kg of phosphate fertilizer) was applied per mu and turned into the soil as base fertilizer. Then, flatten the ground and rake it into a width of 1. The 3-meter high border is surrounded by a deep drainage ditch, and the border surface is held into the shape of a tortoise, and the topsoil layer is required to be loose and broken.

Sowing at the right time

Angelica dahurica is generally sown from early September to late October in autumn, and can be finished in early November in the south where the climate is warm, and before Frosts Descent in the north where the climate is cold. Hole sowing or strip sowing can be used when sowing: (1) hole sowing. Dig holes on the border surface according to row spacing 30-35 cm, plant spacing 20-25 cm, hole depth 8-10 cm, apply appropriate amount of plant ash and mature human feces and urine to mix well as base fertilizer, and then sow seeds. (2) Article broadcast. Open a horizontal ditch on the border surface, with a row spacing of 30-33 cm, a width of 10 cm and a depth of 7-9 cm. Sow seeds with plant ash evenly into the ditch. Cover the fine soil after sowing to the extent that there are no seeds. In case of dry weather, water properly after sowing, and cover the border with grass to moisturize.

Field management

Weeding and seedling intercropping on time: when the seedling height is about 5 cm, start intertillage weeding, and combine weeding to interseedling. There are 5-7 seedlings per hole sown in holes and 1 seedling every 3-5 cm in strip sowing. The height of the seedling was about 10 cm for the second time, 4-5 seedlings per hole and 1 seedling every 7-9 cm in strip sowing. Seedlings with bluish purple petioles should be selected. Seedlings whose petioles are bluish white or yellowish green and whose leaves are concentrated in the upper part of the seedlings will often blossom ahead of time in the future, resulting in hollow roots and should be pulled out. The seedlings were fixed in the last ten days of February in the early spring of the following year, 3 seedlings were planted in each hole, and 2 seedlings were planted in strips according to the plant spacing of 10-15 cm.

Scientific topdressing

Topdressing in time during plant growth can improve the yield and quality of Angelica dahurica. But fertilization should also be appropriate, too much fertilizer, excessive growth, easy to cause bolting and flowering, reduce yield, insufficient fertilizer application, poor growth and low yield. Generally topdressing four times; the first and second times combined with inter-seedlings, each time applying 1500 kg of rarefied human feces and urine water per mu; the third time, applying 2000 kg of human feces and urine water per mu and adding 30 kg of calcium superphosphate per mu; the fourth time before and after Ching Ming Festival, 2500 kg of human feces and urine water per mu and 150kg of plant ash were added.

Timely drainage and irrigation

Angelica dahurica Therefore, in the rainy season to often clear the ditch drainage, drought timely irrigation, irrigation time to choose in the evening.

Removal of bolts: during the period from May to June, some plants will grow too vigorously and will bolt and blossom, so they should be removed in time, otherwise, once they bloom, they will be hollow or rotten roots, reducing yield and quality.