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Detailed Explanation of Key Technical Points for the Prevention and Treatment of Raccoon Dog Big Paw Disease
In recent years, after raccoon dog big paw disease began to show sporadic and endemic outbreaks among most raccoon dog farmers in Zhaoyuan, Taikang and Xingkai Lake areas of Heilongjiang Province, it also successively broke out and spread among some raccoon dog farmers in Inner Mongolia, Jilin, Liaoning, Hebei and other provinces, causing relatively large economic losses. It was initially mistaken for sarcoptic mange infection, and all cases were treated with ivermectin or doramectin. Not only did this fail to cure the disease, but overdose or repeated administration led to drug residue accumulation, causing poisoning and death of the raccoon dogs. The disease is briefly described below so that each raccoon dog farm (
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Detailed Explanation of Key Technical Points for Snake Rearing and Management in Summer
Snake farming is a good way for farming families to get rich. Summer is the active season for snakes; mating, egg-laying (or birthing live young), incubation, predation, and the growth and development of young snakes all take place in summer. To raise snakes well, the following tasks are involved in summer rearing and management. 1. Do a good job selecting breeding snakes. Place male and female breeding snakes in a separated area in proportion to form a breeding group; keep other snakes separately by sex. Before breeding snakes are grouped together, they should be given abundant nutrition so they maintain good breeding condition. Manage them carefully during the mating period to reduce deaths. 2. Manage pregnant female snakes well. Female snakes carrying eggs are best placed separately
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Introduction to Breeding Methods and Technical Key Points for Velvet Deer
Physiological Characteristics of Velvet Deer: Sexual Maturity and Suitable Age for First Mating. Sexual maturity is reproductive physiological maturity, at which point deer can produce mature sperm and eggs and exhibit sexual behavior. The sexual maturity of velvet deer is related to factors such as breed, type, sex, genetic status, nutritional conditions and individual development. Sika deer reach it earlier than red deer, and females earlier than males. Within the same breed, deer with good nutritional status and rapid individual development reach sexual maturity earlier. General sexual maturity period: female sika deer at about 16 months of age; well-developed deer reach sexual maturity at 7 months of age; male deer at about 20
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Soilless Cultivation Methods and Key Technical Points for Azaleas
The characteristic of soilless cultivation is the replacement of soil with an artificially made substrate. Summer azaleas grown soilless have a compact crown structure and abundant flowering; large flower diameter and few pests and diseases. It not only improves flower quality but also greatly reduces heavy physical labor, making it a cultivation method worth vigorously promoting. 1. Preparation of the substrate. Azalea roots are very fine, requiring a loose substrate to facilitate aeration and drainage. Use 1 part vermiculite, 1 part perlite, 1 part river sand, and 1 part coal cinder mixed in proportion. After mixing the substrate, use 0.1% car
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Detailed Explanation of Shiitake Mushroom Drying Methods and Technical Key Points
Shiitake mushroom drying technology is very important; it plays a key role in the shape, color, and aroma of shiitake mushrooms. Drying equipment must use a dryer to ensure quality; traditional methods of drying must be completely eliminated. When drying, separate by size and thickness, and separate dry from wet. Place mushrooms with stems pointing up flat on the drying tray. Mushrooms with low moisture content and thick caps go on the bottom layer; those with high moisture content, thin, and small go on the upper layer. Fresh mushrooms with high moisture content can be placed cap-side up, sun-dried for 1-2 hours, then put into the drying room for drying. ① Initial drying stage: The starting temperature should not be too high or
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Detailed Explanation of the Key Technical Points for Raw-Material Cultivation of Shiitake Mushrooms
I. Significance of raw-material cultivation 1. The substrate has a wide range of sources and is easy to obtain locally, such as sawdust, cottonseed hulls, soybean stalk powder, corn cobs, etc. 2. The raw-material cultivation process is simple and greatly saves labor and working hours. 3. Raw-material cultivation has a short cycle and quick returns. From pressing the blocks or bagging and inoculating to fruiting generally takes only about 40 days. The substrate is not subjected to high-temperature sterilization, so the nutrients are not destroyed, and pile fermentation can decompose most macromolecular substances into small-molecule substances easily absorbed by the mycelium. At the same time, because an appropriate amount of fungicidal agent is added to the substrate, infection by contaminating microorganisms is also markedly reduced. 4. Raw-material cultivation has low cost, good quality, and high yield. Compared with cooked substrate, raw material increases yield by 27%, while production cost is reduced by 29%. II. Raw material preparation 1. Substrate formulas. Because shiitake is a wood-rotting fungus, in order to improve yield and quality, the substrate must contain more than 30% sawdust. The four substrate formulas are introduced as follows: (1) Sawdust 38 kg, wheat bran 10 kg, sugar 1 kg, gypsum 0.5 kg, superphosphate 0.5 kg, carbendazim 35 g. (2) Cottonseed hulls 20 kg, sawdust 19 kg, wheat bran 10 kg, sugar 0.75 kg, gypsum 0.5 kg, carbendazim 35 g. (3) Corn cobs 25 kg, sawdust 15 kg, wheat bran 8.5 kg, sugar 0.75 kg, gypsum 0.5 kg, urea 0.25 kg, carbendazim 35 g. (4) Rice straw (or wheat straw) powder 19.5 kg, sawdust 19.5 kg, wheat bran 9.25 kg, sugar 0.75 kg, gypsum 0.5 kg, carbendazim 35 g. 2. Pretreatment of sawdust. Sawdust is the raw material most favored by shiitake. Because sawdust is mixed with large amounts of components from pine, cypress, fir, and other such species, and the sawdust of these tree species contains terpenoid substances that inhibit mycelial growth, necessary measures must be taken to treat it when cultivating shiitake so that the mycelium can grow normally. The specific methods are as follows: (1) Limewater soaking method: its principle is that limewater has a relatively high pH, and its alkalinity can destroy the chemical structure of terpenoid substances. Generally, sawdust is soaked in 2% limewater for 12 hours-24 hours, then removed, rinsed with clean water, and sun-dried for later use. (2) Potassium permanganate solution soaking: its principle is that potassium permanganate can oxidize terpenoid substances. Generally, sawdust is soaked in 0.2%-0.3% potassium permanganate solution for about 12 hours, then removed, rinsed with clean water, and sun-dried for later use. (3) Boiling: boil sawdust in boiling water for about 15 minutes, remove it, rinse with clean water, and air-dry for later use. (4) Sun exposure: exposing sawdust to the sun for 60 days-90 days can also cause terpenoid substances to decompose and volatilize. 3. Pile fermentation (1) Functions: a. Through fermentation, some macromolecular substances can be degraded into small-molecule substances directly utilized by the mycelium. b. During fermentation, the temperature can reach 70°C, which can kill most contaminating microorganisms. c. During fermentation, terpenoid substances that inhibit mycelial growth can be degraded. (2) Process: mix the substrate uniformly according to the formula, then add water at a ratio of 1:1.3, mix well, and build a pile. The pile width is 1.2 m-2 m, the height is 1 m-1.5 m, in a trapezoidal shape, and the length depends on the amount of material and the site. The piling period is generally about 26 days, and the pile is generally turned 4 times-5 times, with the time intervals allocated as 7 days, 6 days, 5 days, 4 days, and 4 days. If the fermentation time is short, the material cannot fully decompose; if the fermentation time is long, the nutrient loss in the substrate is too great. Other materials are added in conjunction with pile turning, and the order is as follows: gypsum is added in two portions at the 1st and 2nd turnings; urea is added in 3 portions at pile building and the 1st and 2nd turnings; lime is added at the 3rd turning. Wheat bran, sugar, and carbendazim are added after the pile fermentation is completed and before bagging. The pile color is brown or coffee-colored, not black; the smell is mellow, without stench, sourness, or mustiness; the material is soft and elastic; the volume is reduced by 40% compared with the original, and the weight is reduced by about 30%. III. Disinfection of the mushroom house. The first disinfection is carried out before the substrate enters the mushroom house, and the second disinfection is carried out after it enters the mushroom house. In this way, contaminating microorganisms and pests in the mushroom house, bed frames, and substrate can be reduced to the greatest extent. The specific method is: for every 100 cubic meters of space, use sulfur 500 g, dichlorvos 100 g, and formaldehyde 200 g, mix with sawdust, heat, and fumigate sealed for 24 hours, then open doors and windows for ventilation, and only enter to operate after the medicinal odor in the mushroom house has dissipated. IV. Cultivation management 1. Pressing blocks or bagging. (1) Mixing materials: dissolve carbendazim in a small amount of clean water, add it with wheat bran to the substrate, gradually add an appropriate amount of clean water, and stir thoroughly and evenly. The water content in the substrate is about 60%, judged by water appearing between the fingers when the material is squeezed in the hand but not dripping, and the pH is 6.5-7, then mix in 10% spawn. (2) Pressing blocks or bagging: on a cement floor, first spread a layer of plastic film soaked in 0.2% potassium permanganate solution, place a wooden frame mold 33 cm long, 33 cm wide, and 8 cm high on the film, then sprinkle a 1 cm thick layer of spawn, pour the spawn-mixed substrate into the wooden frame, press flat slightly, sprinkle another 1 cm thick layer of spawn on the surface, preferably so that the substrate is not exposed, finally scrape flat with a wooden board and press firm, release the frame mold, and it becomes a spawn block 6 cm-7 cm thick, and finally fold the film well. If using bagging, first put the spawn-mixed substrate into the bag, then insert a hole in the center with a conical stick, and finally sprinkle a 1 cm thick layer of spawn at both ends of the substrate bag, preferably so that the substrate is not exposed, then tie the opening tightly to seal it. 2. Management during the mycelial culture period. The optimum temperature for mycelial growth is 25°C. During mycelial growth, the relative air humidity is required to be 60%-65%. Before the mycelium has fully colonized, avoid lifting the film, in order to prevent contamination by foreign microorganisms and to help maintain temperature. When the mycelium has fully colonized, turn the spawn block over and continue culturing for 4 days-5 days. When about 40% of the surface mycelium has turned brown, it can be placed on the shelves to induce fruiting. 3. Management during the fruiting period. The optimum temperature for fruiting is 12°C-18°C. A large day-night temperature difference can promote the formation of shiitake fruiting bodies. The relative air humidity in the mushroom house is maintained at about 90%. The specific measures taken are: spraying water on the floor and walls, and misting in the air. The water content of the spawn blocks should reach 50%-60%. As the culture time increases, the water content of the spawn blocks gradually decreases, but water must not be sprayed directly on the fruiting bodies, otherwise the fruiting bodies rot easily. If the water content of the spawn blocks drops below 40% and they feel very light when picked up by hand, then soak the spawn blocks in a water pool for 15 hours-20 hours so that they fully absorb water, then take them out and put them back on the shelves. Generally, 4 batches-5 batches of mushrooms are harvested, until the nutrients in the substrate are completely exhausted. 4. Harvesting. When the fruiting bodies have opened to 70%-80%, harvest them promptly. When harvesting, take care to pick the large ones and leave the small ones, combine harvesting with management, prevent damage to the surrounding small mushrooms and spawn blocks, and do not leave the base of the stipe on the spawn block, so as to avoid invasion by contaminating microorganisms that affects fruiting. 5. Spraying nutrient solution. (1) Formulas. No. 1 vigor agent: B9 0.5 g, vitamin B1 40 mg, urea 100 g, water 100 kg. No. 2 vigor agent: B9 1 g, vitamin B1 100 mg, magnesium sulfate 50 g, potassium dihydrogen phosphate 100 g, water 100 kg. (2) Method of use. After harvesting two flushes and stopping water for 2 days-3 days, use No. 1 vigor agent and spray continuously 2 times-3 times, using 0.25% nutrient solution per square meter, which can make the mycelium turn white and thicken.
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Shiitake Mushroom Deep Processing: Production Workflow and Key Technical Points
I. Shiitake Soy Sauce Production Process Generally, each kilogram of shiitake by-products (deformed mushrooms, substandard mushrooms, small mushroom pieces, mushroom stems, and the residue from shiitake submerged fermentation) can be made into 10 kg of premium soy sauce. The production steps are: 1. Raw material selection: 10 kg fresh mushrooms, 400 g dried ginger, 300 g fennel, 250 g Sichuan pepper, 200 g star anise, 200 g orange peel, 150 g cassia bark, 100 g food-grade preservative, 50 g lysine, 50 g monosodium glutamate (MSG), 6 kg roasted salt, 10 kg soybean water, 10 kg warm water
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Key Technical Points for Standardized Cultivation and Management of Honeysuckle
I imagine everyone still remembers the SARS outbreak in the first half of last year, when several Chinese medicinal herbs suddenly became hot remedies, and honeysuckle was one of them. Honeysuckle is one of the 38 precious Chinese medicinal herbs under key state management, capable of clearing heat and detoxifying, dispelling wind and reducing swelling, and enjoys the reputation of being the "little immortal of the medicine shop." However, honeysuckle cultivated under traditional experience can no longer meet people's demand for its quality and safety. As the largest honeysuckle-producing county, Fengqiu County in Henan Province took the lead in addressing quality and safety, launching a "revolution" in the traditional cultivation and management methods of honeysuckle.
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Key Technical Points for Site Selection and Land Preparation in Honeysuckle Cultivation
(1) For the seedling nursery, it is advisable to choose sandy loam soil close to a water source, convenient for irrigation, loose and fertile, and well-drained. After selecting the site, plow the soil deeper than 30 cm, harrow it fine and level it, and apply 1500-2000 kg of decomposed barnyard manure or compost per 667 sq m as base fertilizer. Then shallow plow and harrow once, and form beds 100-200 cm wide and 20 cm high. Use these as seedbeds for cutting propagation and sowing propagation. (2) For the planting site, use wasteland slopes, field edges, ditch edges, and in front of and behind houses
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Honeysuckle Transplanting Methods and Key Technical Points
After seedlings raised from cuttings or seeds have been grown, they should be planted in spring. Choose cloudy and rainy weather, and plant 1 to 2 strong seedlings per hole in the prepared ground. When planting, let the roots spread out naturally, then cover with soil and firm it down, water thoroughly once, and cover the holes with grass to retain moisture, thereby increasing the survival rate.
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