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Introduction to Specialty Rice Varieties: Getting to Know Common Types of Specialty Rice
In recent years, the Department of Agronomy at South China Agricultural University has bred several specialty rice varieties, mainly including fragrant rice, fragrant black rice, red zhan rice and others. Their varietal characteristics and key cultivation points are briefly introduced as follows: 1. Wanxianxiangzhan No. 1: Wanxianxiangzhan is a variety bred by crossing Wanlixiang with Jingxian 89, and is an early-season, medium-maturity, high-quality fragrant rice. When planted in the Guangzhou area in the early season, the whole growth period is about 125 days, plant height is 90 cm, plant type is moderately compact and spreading, tillering ability is medium, each panicle has 150-200 grains, it has a certain fragrance, good eating quality, and good late-stage ripening color.
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Detailed Explanation of Common Disease Prevention and Control Methods for Fish and Crabs, a Must-Read for Farmers
I. Grass carp hemorrhagic disease. Symptoms: bleeding in the fins, mouth, eye sockets, muscles, and intestines, partially or entirely bright red. Prevention and control: 1. Splash dibromohydantoin or chlorine dioxide over the entire pond, using 200 grams of dibromohydantoin or chlorine dioxide per 1 mu of water surface with a depth of 1 m. Apply once more after 2-3 days. 2. Mix Yu'erkang into bait and feed, mixing 1 kg of Yu'erkang per 50 kg of feed, and feed continuously for three days. 3. Mix Suke into bait and feed, mixing 50 grams of Suke per 50 kg of feed, feeding once a day, with three consecutive days as one treatment course. If combined with external use of dibromohydantoin
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What are the signs of illness in softshell turtles? An introduction to common symptoms
Softshell turtles are timid, afraid of people, afraid of cold, like to burrow into mud, and like to bask in the sun. Once they get sick, their behavior becomes abnormal: they no longer burrow into mud or bask on their backs, and instead prefer to hide in shady, dry places, moving slowly and not fearing people. Based on these characteristics, problems can be discovered as quickly as possible, which is beneficial for the prevention and treatment of softshell turtle diseases. In ponds where there are no habitats for sick softshell turtles, once a softshell turtle gets sick it is difficult to detect, often delaying treatment; once it surfaces, the disease is already incurable and beyond saving. Healthy softshell turtles move nimbly; as soon as they detect
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How to choose common turtle species? A detailed guide to practical selection methods
Turtle: The male should have a pitch-black shell, a thick and solid tail base, and a long, deep concave plastron; the female should have a short, thick body and a short, thick tail. It is best to choose turtles aged 8 years or older, with the female weighing 350 grams; the male only needs to have reached the age of gonadal maturity. The female-to-male ratio is 2:1 to 3:1. Golden coin turtle: When selecting, hold it in your hand and turn it over; its head will extend very long, with even thickness, and its eyes will move flexibly and look lively. The skin is glossy, the temperament is docile, the gap between the upper and lower shells at the tail is large, and the cloacal opening is wide. Turtles aged 6 years or older are required, with the female weighing 1250 grams to 150
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How are common general fish medications used? Detailed usage guide
1. Quicklime can be used for pond clearing and disinfection, and can raise the pH of the pond water, improving the pond bottom substrate and water quality. 2. Formalin (formaldehyde) as a 30 ppm solution for a 24-hour soak can kill Trichodina, Chilodonella, Dactylogyrus and Ichthyophthirius, etc.; a 250 ppm soak for 1 hour, or 100 ppm for 3 hours, can treat Gyrodactylus and other protozoa; using a 3%-5% solution to soak spawning nests for 2-3 minutes can prevent saprolegniasis; applied as a mixture with malachite green to the whole pond, it can treat ichthyophthiriasis; 1
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What polypeptide antibiotic drugs are commonly used in geese
Colistin source and properties: This product is extracted from the culture fluid of Bacillus polymyxa. It has five components, A, B, C, D, and E, belongs to the polypeptide compounds, and has similar basic chemical structures. In clinical application, colistin B and E are mainly used. Its sulfate is a white or light yellow powder, easily soluble in water. Action and uses: This product has a strong antibacterial effect on Gram-negative bacteria, inhibiting bacteria at low concentrations and killing bacteria at high concentrations. It is mainly highly effective against Escherichia coli, Salmonella, Shigella, Pseudomonas aeruginosa, Pasteurella, and others
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Common energy feedstuffs for pigs: cereal grains (Part 1)
Common feeds for pigs include energy feeds, protein feeds, green feeds, silage, roughage, mineral feeds and feed additives, etc. Energy feeds refer to feeds with a crude fiber content below 18% and a crude protein content below 20%; their nutritional characteristic is that they are rich in easily digestible starch and are the main source of energy required by pigs. However, such feeds are low in protein, minerals and vitamins, and mainly include cereal grains and their processing by-products, starchy root tubers and tubers, etc.
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What are the common methods for preventing and treating diseases in sheep raised in spring?
Acute bloat: Because sheep are fed hay for a long time during winter housing, they are prone to overeating when they occasionally eat green grass in spring. The green grass ferments acutely in the stomach, producing a large amount of gas, which expands the rumen. If rescue is not timely or the rescue method is improper, it can cause the sheep to die. Rescue method: insert a section of willow stick into the sheep's mouth, tie both ends with rope to the sheep's head, let the sheep chew, and at the same time massage its left flank with your hand to help release the gas. You can also peel the paper off 5~10 cigarettes, divide the tobacco shreds into two portions and stuff them into the sheep's mouth; mild cases recover 1 hour after eating. You can also use
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An Introduction to the Common Life Habits and Characteristics of Dogs
Dogs Have a Hierarchical Instinct. Dogs are naturally sociable animals, but within a group there is a clear hierarchy. In dog breeding farms, rural areas or suburban dog packs, there is always a top dog (usually an older dog) that dominates and governs the whole pack. How does a high-ranking or senior top dog demonstrate its hierarchical superiority? It usually uses the following specific actions to show it: for example, it is allowed to inspect another dog's reproductive organs while the other is not allowed to inspect its own; it does not permit the other to urinate where another dog has already urinated; the other may shake its head, wag its tail, act playful, or retreat in front of the top dog
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Common problems and countermeasures during the black fry stage of Japanese eel
At the turn of spring and summer, Japanese eel farming in various regions is mostly in the black fry stage, and it is commonly reported that there are phenomena such as a decline in feeding rate and a tendency for gill rot and tail rot syndrome to occur, seriously affecting the healthy, sustainable, and steady development of Japanese eel farming. The main problems existing in the black fry stage of Japanese eel farming are now analyzed, and some corresponding countermeasures are proposed for reference. 1. Decline in feeding rate: In Japanese eel black fry farming, the phenomenon of a decline in feeding rate or difficulty in increasing the feeding amount occurs, and the main triggering factors are
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