How does Angelica control diseases and insect pests?
How does Angelica control diseases and insect pests? Please introduce the following methods for the prevention and control of diseases and insect pests of Angelica sinensis: root rot: soaking seedlings with Bordeaux solution of 1RV, disinfecting and killing insects in soil, burning and smoking soil in the nursery ground. 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. Click to get more Angelica planting technology click to get more medicinal material planting technology
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How to harvest Angelica sinensis?
How to harvest Angelica sinensis? Please introduce the direct broadcast of Angelica sinensis in autumn in the second year, transplanted in the same year, and harvested after withered and yellow plants in the middle of October. The natural conditions are different in different places, and the harvest time is also different. For example, Minxian County in Gansu Province harvested 3-5 days after Frosts Descent, Sichuan producing area harvested before and after Frosts Descent, and Yan'an in Shaanxi Province in October.
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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. Prevention and cure method: ① uses 391 per mu.
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