How to control diseases and insect pests of Angelica sinensis?

How to control diseases and insect pests of Angelica sinensis? Please introduce in detail the prevention and control of diseases and insect pests of Angelica sinensis with reference to the following methods: (1) the peak period of the disease is in mid-April, mid-June, early September and early November after transplanting. Underground pests are mostly conducive to the disease. Control methods: ① is mixed well with 3911 granules 3 kg / mu plus 15kg of fine soil or 0.5kg of methyl isophosphates emulsion and 2.5kg of water sprayed on 15kg of soil, sprinkled and turned into the soil; ② is irrigated regularly with broad-spectrum long-acting insecticides, 250g of carbendazim gel suspension per mu or 600g of thiophanate per mu plus 150kg of water, 50g of irrigation diluent per plant, irrigated once in early May and mid-June. (2) Sclerotinia sclerotiorum is harmful to leaves, which is easy to occur under the condition of low temperature and high humidity, and the damage is more serious from July to August. Prevention and treatment methods: non-continuous cropping, 1000 times 50% methyl thiazine was sprayed continuously for 4 times every IO day in the first half of the month. (3) the insect pests are mainly caused by golden needle adults and small earth tigers. Control method: root out the grass inside and outside the field, pile it into a small pile, change the fresh grass for 10 days, and kill it with poison bait. Click to get more Angelica planting technology click to get more medicinal material planting technology