Harm and Control of Sclerotinia sclerotiorum of Angelica sinensis
Sclerotinia sp is a fungus belonging to the genus Sclerotinia belonging to the subphylum Ascomycetes. Sclerotia grow on aerial hyphae on the surface of plants or in the internal cavities of plant organs, resemble rat dung, are irregular, and consist of hyphae.
1. Harm symptoms: mainly harmful to roots and leaves. At the beginning of the disease, the leaves turned yellow, and at the later stage, the plant wilted. The root tissue rotted into a cavity, which contained many black sclerotins.
2, the incidence of law: pathogenic bacteria to sclerotia in the seeds, seedlings, sick bodies or soil winter, in December to February to March of the next year to form ascocarp, produce ascospores, by wind and rain scattered, expand damage. The fungus is a low temperature disease, low temperature and high humidity, weeds, extensive management conducive to disease.
3. Prevention and control measures
1. Concentrate on removing sclerotia from burned diseased plants and soil to eliminate pathogen sources.
(2) rotation of rice and drought to eliminate sclerotia in soil.
(3) Establish disease-free seedling base, transplant disease-free seedlings, soak in 0.05% ammonium bromide for 10 minutes before transplanting, and disinfect seedlings.
4. Remove the diseased plants in time at an early stage, dig out the soil of the diseased points, and disinfect them with quicklime to prevent the spread of diseases.
5. At the beginning of disease, spray 600 times 65% zinc or Bordeaux mixture (1:1:300) or irrigate with 300 times sclerotium.
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Danggui Liuhuang decoction in the treatment of hidrosis in livestock
Treatment principle: nourish yin and clear heat, collect yin and stop sweating, and fix the surface. Prescription: Radix angelicae Sinensis, Radix Scutellariae, Radix Phellodendri, Radix Scutellariae, Cortex Phellodendri, Radix Coptidis, Radix Astragali, Oyster, Ephedra root and floating wheat were each 50g, 50g, 40g, 40g, 100g, 70g, 80g, 80g, respectively, 1 dose a day, sweating was greatly reduced after 1 dose, and cured by 3 doses.
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Angelica sinensis yellow Phoenix butterfly
Angelica yellow butterfly, also known as fennel butterfly, belongs to Lepidoptera, Butterfly family. The main results are as follows: 1. the larvae are harmful to the larvae and bite the leaves at night, resulting in a lack of engraves. in severe cases, the leaves are eaten up, leaving only petioles and veins, and flowers and fruits are also eaten. The insect has a large food intake, which seriously affects the growth of Angelica sinensis and reduces the yield. 2. morphological characteristics of adults: they are large butterflies, which can be divided into spring and summer types. The summer type is about 25 mm long, the wingspan is 90 mm, and the spring type is slightly smaller. The body is yellow, with black stripes running through the back. The front and rear wings are yellow.
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