How can Angelica dahurica be planted with high yield?

How can Angelica dahurica be planted with high yield? What diseases and insect pests need to be controlled? Please also know the netizens to help introduce the planting method of Angelica dahurica and the prevention and control of common diseases and insect pests, which are listed in detail below for netizens' reference. First, Angelica dahurica da Second, Angelica dahurica reproduction methods: such as seed reproduction, the use of direct seeding. Autumn sowing, generally sowing from September to October, strip sowing according to row spacing of 35 cm shallow trench sowing; hole sowing according to hole spacing (15 cm 20) cm X 30 cm hole sowing, covering thin soil after sowing, compaction, and seedling emergence 15-20 days after sowing. The amount of seed used per 1000 square meters is about 2 kg for strip sowing and 1 kg for hole sowing. If the seeds are sprayed with 2% potassium dihydrogen phosphate aqueous solution before sowing, stirring, moistening for about 8 hours, and then sowing, seedlings can emerge earlier and the emergence rate can be greatly increased. Third, Angelica dahurica daily field management: management method 1. Angelica dahurica At the same time, remove extra-large seedlings to prevent early bolting. Management method 2, weeding in mid-tillage: weeding should be combined with inter-tillage every time, only loosening the topsoil for the first time, and then gradually deepening. After the plant is closed, stop ploughing. Management method 3. Topdressing method of Angelica dahurica: planting Angelica dahurica for 3 times and 4 times. It is often carried out between seedlings, after setting seedlings and before closing. Fertilizer species are mainly rotten human feces and urine, cake fertilizer and so on, which are light at first and then thick. After topdressing before the last closure, the soil should be cultivated in time to prevent lodging. Management method 4. Water management of Angelica dahurica: if the soil is dry after sowing, it should be watered once, and then the border surface should be kept moist before the seedlings are unearthed to facilitate seedling emergence. After fixing the seedlings, less watering and more ploughing should be done to promote its roots to grow downward. Pay attention to drainage after rain. Fourth, Angelica dahurica common diseases and insect pests control: 1, spot blight: mainly harmful to leaves. The method of prevention and treatment was to remove the diseased and residual tissue and burn it centrally, and at the initial stage of the disease, the patients were sprayed with Bordeaux solution or polyantimycin 100,200 units. 2. Yellow Phoenix butterfly: take the larva as the harmful leaf. In addition, aphids, red spiders and root-knot nematodes are harmful to the aboveground and root parts, so the corresponding pesticides should be selected in time. Click to get more planting techniques of Angelica dahurica