Prevention and Control of Diseases and insect pests of Angelica sinensis
Root rot: soak the seedlings in Bordeaux solution, disinfect the soil and kill insects, and burn more smoked soil in the nursery.
Brown spot: pay attention to field hygiene, remove the diseased leaves in time, and spray 150 times Bordeaux solution with 1 Bordeaux solution in the middle and later stages.
Insect pests: there are mainly peach powder aphids, commonly known as "beetles". In May, a large number of propagation, concentrated in the new shoots of Angelica sinensis and the back of the young leaves to absorb juice, so that the heart leaves thicker, fist-shaped curling, plant dwarfing.
Control methods: remove weeds around the field and reduce the chance of aphids moving in; when aphids occur, spray 2000 times of dimethoate or 1000 times of fenitrothion, once every 5-7 days, 2-3 times in a row.
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Prevention and control of diseases and insect pests of Codonopsis pilosula
Codonopsis pilosula is commonly used in China, which is widely planted in the north of China, with the functions of tonifying qi and nourishing blood, invigorating spleen and stomach, promoting fluid and clearing lung and so on. The main treatment of shortness of breath, Jin wound thirst, spleen and stomach weakness, loss of appetite, clear stool, lung deficiency cough and asthma, fever after weakness, qi deficiency prolapse and other diseases, a wide range of uses. The prevention and control methods of diseases and insect pests are introduced as follows: first, root rot often occurs during the period of high temperature and humidity from May to June in summer. It mainly occurs in the plants of Codonopsis pilosula in the growing period of more than 2 years. At the beginning of the disease, the lateral root near the ground
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Prevention and control of diseases and insect pests of Angelica sinensis
The main results are as follows: (1) the peak of the disease is in mid-April, mid-June, early September and early November after transplanting, which is harmful to the roots, and most of the underground pests are beneficial to the disease. Control methods: ① is mixed well with 3911 granules per mu, 3kg of fine soil, 15kg of fine soil, 0.5kg of methyl isophos emulsion and 2.5kg of water, sprinkled on 15kg of soil, sprinkled and turned into the soil; ② is regularly irrigated with broad-spectrum long-acting insecticides, 250g of carbendazim gel suspension or 600g of topiramate per mu.
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