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What time and conditions are needed for artificially rearing queen bees?
When the new bees reared by the colony that year have completely replaced the old overwintering bees and the colony has entered its growth and expansion period with a relatively strong population, you can prepare for artificial queen rearing. In the north, it is best to rear queens in early summer when the daytime temperature is stable above 20°C and there is a nectar source, especially when there is an abundant pollen source and drones also begin to emerge one after another. In North China this is generally in May. This can ensure the quality of the queen bee, and also allows the early replacement of aging queens with new queens. Colonies with a queen from the current year will not undergo natural swarming. Use the new queens reared early to carry out artificial colony splitting
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What tools and equipment are needed for cultivating Armillaria in Gastrodia elata cultivation
Cultivating fungi is a highly technical and very meticulous task, requiring a considerable level of technical skill and the necessary equipment, tools, and so on. The main equipment and tools needed are: 1) Sterile box: The sterile box, also called an inoculation box, is a small box made of wood and glass that can be sealed to allow fumigation with chemicals and prevent contamination by unwanted microorganisms. The front and back of the sterile box are fitted with glass windows that can be opened and closed, and two openings are made at the bottom, fitted with cloth sleeves, through which both hands can be inserted to work inside the box. A fluorescent lamp or ultraviolet sterilizing lamp is installed at the top inside the box. 2) Sterile room: It is the same as
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How many snakes are needed to collect 1 gram of dried venom?
The venom output of different species of venomous snakes varies greatly. Comparing the venom they discharge by dry venom rate, the king cobra averages 101.9 mg per bite, the sea snake only 2.5-5.0 mg, and the many-banded krait 4.6 mg. That is to say, the venom output of the king cobra is 41-20 and 20 times that of the sea snake and the many-banded krait respectively. Obviously, the king cobra's venom output is so large that obtaining 1 gram of its dried venom is easy, requiring only about 10 snakes. However, to obtain 1 gram of dried venom from a sea snake or a many-banded krait, it would take 200-40
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Wide choice of cotton varieties, cotton farmers can choose as needed
Recently, several readers have asked our newspaper for help, seeking to buy seeds of new insect-resistant cotton and hybrid cotton varieties. Due to limited seed sources and a tight market, most readers were unable to get what they wanted. Faced with this year's cotton seed supply situation, how can cotton farmers choose cotton varieties that suit them? After contacting the Crop Cultivation Station of the Jiangsu Provincial Department of Agriculture and Forestry and other relevant departments, this author believes that the choice of cotton varieties is still quite wide. For cotton farmers preparing to practice intercropping and relay intercropping in cotton fields, it is of course best to be able to choose cotton varieties with strong plant growth and good insect resistance, as this can both widen the cotton row spacing,
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What conditions are needed for the growth and development of shiitake mushrooms?
1. Nutrition The shiitake mushroom is a higher wood-rotting fungus. The carbon source it needs for growth comes from lignin and cellulose, and its nitrogen source and inorganic salts come from the bark of bed logs or from wheat bran (rice bran) added to sawdust substrate. After shiitake spawn is inoculated into bed logs (substrate logs), the substrate is decomposed into small-molecule substances that can be absorbed and used by shiitake mycelium, and mycelial biomass increases with longer cultivation time. When the substrate has been fully degraded, the shiitake mycelium has accumulated a large amount of nutrients, laying the material foundation for fruiting body formation. Under suitable con
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What preparations are needed before sowing cotton
1. Land preparation and fertilization: On the basis of winter plowing and freezing of the soil, apply base fertilizer in spring by broadcasting 3 cubic meters of slow-release organic manure and 30 kg of quick-acting NPK compound fertilizer per mu, then plow again, harrow and level. After rain, harrow again to retain moisture and preserve soil moisture, and wait for sowing with sufficient moisture. 2. Seed preparation: (1) Variety selection. Choose disease-resistant and insect-resistant hybrid cotton varieties. Commonly used varieties include Yuzha 35, Zhongmian 47, Zhongmian 48, etc. (2) Seed selection. Choose seeds with high purity, plump grains, maturity, and high germination rate. (3) Sunning seeds.
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Caution Needed in Yew Cultivation Development: Don't Blindly Follow the Trend
After entering the 21st century, yew has been hyped up in some parts of China, with flyers everywhere exaggerating the benefits of growing yew to mythical proportions, claiming a "sky-high" profit of 100,000 yuan per 667 sq m. Tempted by the high returns, some kind-hearted investors were dazzled and rushed to invest in yew cultivation, and yew seemed to become a new project for getting rich overnight. In response, relevant experts in China remind: enterprises and farmers enthusiastic about investing in and developing yew cultivation need to be cautious. The true face of yew is as follows: 1. Exaggerated products
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What conditions are needed for sea cucumber farming? Key points explained
Sea cucumber farming conditions
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What environmental conditions are needed for snapdragon growth
Environmental condition requirements for snapdragon growth
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What conditions are needed for cherry cultivation? A full analysis of growing requirements
Cherry cultivation conditions
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