"Seven look" to check silkworm disease
Look at development: healthy silkworms develop and grow neatly. If the body is enlarged, the development is too fast, and the age is obviously shortened, we should be on guard against the occurrence of silkworm pus. If the body is too thin and of different sizes, we should be on guard against short silkworm disease, chelating of golden caterpillars, exhaust gas poisoning and so on.
Look at eating mulberry: there is a sound of eating mulberry, if the voice is low or silent, we should be on guard against silkworm disease. Pesticide poisoning. Silkworms will crawl and gradually stop eating and spit milk.
Look at the behavior: the behavior of healthy silkworms is lively, alert and responsive. Unhealthy silkworms react abnormally. For example, ① silkworms suffering from purulent disease crawl manic and often crawl out of the silkworm seat. ② disease of silkworm is concentrated, eating mulberry is not prosperous, head and chest tremble, usually for acute pesticide poisoning or sudden collapse disease. ③ is slow to crawl and slow to respond, which is the symptom of gastrointestinal abscess, viral malacia and Beauveria bassiana.
Look at the body color: silkworms suffering from pus and Metarhizium anisopliae are milky white, shiny, and easy to break and discharge pus. The quenched diseased silkworm has an empty chest and tail and a slightly yellowish brown back, which is a specific symptom. The appearance of thick purple silkworms before and after the cluster is caused by drilling human silkworms. After the silkworm body of Beauveria bassiana and Beauveria bassiana is stiff, pink appears first from the tail, and then gradually spreads to the whole body.
Look at the posture: silkworm links or Internode membrane swelling, to guard against purulent disease, Metarhizium anisopliae, poisoning. The septicaemic silkworm carcass first stiffens and then softens and decays quickly. The corpses of zombie silkworms gradually hardened.
Look at spitting: poisoning can cause a lot of spitting. Silkworms that vomit a small amount of gastric juice and often talk about it suffer from rigidity and cataplexy.
Look at defecation: silkworms suffering from gastrointestinal abscess, viral malacia and bacterial gastroenteropathy, defecate soft feces, dilute feces, and even drainage feces. These diseased silkworms and silkworms poisoned by organophosphorus pesticides all excreted unformed feces.
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Utilization and cultivation techniques of Honeybee Flower
Honeybee flower, also known as honeybee flower, vanilla, lemon mint, is a perennial herb of the family Labiatae, native to both sides of the Mediterranean in Europe. Pot plant height about 30 cm, ground planting 50-80 cm, stem erect, much branched; leaf yellowish green, both sides sparsely pilose and hyaline glandular spots; inflorescence whorl umbellate, terminal or axillary, Corolla lip-shaped, mostly white or light yellow. Sweet bee flowers like light, but avoid direct sunlight, both heat-resistant and cold-resistant, the north open field with a little soil cover can be safe
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On the Prevention and Control of Deer Disease in China
Over the past half a century, with the development of the deer industry, the number of deer is increasing, deer have more extensive contact with the external environment, and the types of deer diseases are also increasing. The mortality rate of some deer farms is as high as more than 10% (including deer that should be eliminated but not eliminated). Deer disease has become one of the important risks in deer production. 1 Historical review the understanding of deer disease is advanced and improved with the development of deer production. China has a history of raising deer for thousands of years, and the real prosperity was after the founding of New China. In the early days of the founding of the people's Republic of China, there were not many deer, and there were few deer diseases.
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