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The Putian Black Duck is a typical egg-type duck breed.
(1) Origin and distribution: It is the only black-feathered breed among the egg-type breeds in China. It is named after its central production area in Putian, Fujian Province. It is mainly distributed in Pingtan, Fuqing, Changle, Lianjiang, the suburbs of Fuzhou, Hui'an, Jinjiang, Quanzhou and other counties and cities. This breed is an egg-type duck developed under beach grazing conditions; it adapts both to grazing on soft tidal flats and to grazing on hard beaches, and has relatively strong heat tolerance and salt tolerance, making it especially suitable for rearing on hard tidal flats in subtropical regions.
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Introduction to the Performance Characteristics of the Long-Board Type Flat Tea Frying-Drying Machine
The long-board type flat tea frying-drying machine first appeared in the Xinchang tea area in 2000, and its manufacturers are mainly distributed in Xinchang and Pan'an counties. At present, this tea machine has been widely used in some main Longjing tea producing areas of this province. The commonly used models of the long-board type flat tea frying-drying machine are mainly composed of a long semicircular tea frying pan, a long tea-leaf stirring board, a transmission mechanism, a heat source device, a temperature control instrument and a frame, etc. When this machine is used for Longjing tea frying, like manual frying, it is also divided into two main processes: the green-frying pan and the final-firing pan. For frying the green-frying pan, when the pan temperature reaches
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What disease is Pigeon Paramyxovirus Type I
Raising pigeons is like raising other poultry: the wider the scale of rearing and the greater the numbers, the more diseases inevitably follow. This disease was discovered in recent years and is a highly contagious, septicemic infectious disease caused by Pigeon Paramyxovirus Type I. It is commonly known as pigeon Newcastle disease, and some also call it pigeon plague. In pigeon flocks it sometimes strikes ferociously, and sometimes occurs only sporadically. Squabs infected with this disease easily die in large numbers, and young pigeons and parent pigeons also die. The incubation period of this disease is 1 to 10 days, usually 1 to 5 days. Before onset, the birds appear completely normal; when mixed together, the
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What types and characteristics do specialty rice varieties have?
I. The concept of specialty rice II. Types and characteristics of specialty rice 1. Colored rice 2. Aromatic rice 3. Special-purpose rice I. The concept of specialty rice Specialty rice refers to rice with specific genetic traits and special uses, mainly distinguished from ordinary rice by the particularity of its use. Specialty rice generally includes three categories: colored rice, aromatic rice and special-purpose rice. Although its varieties account for only about 10% of rice germplasm resources, it has received widespread attention at home and abroad because of its special nutritional, health-care and processing-and-utilization characteristics.
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Fuyang's stretcher-type high-pressure sprayers achieve remarkable results in controlling brown planthopper
This year is the most severe year for late rice brown planthopper infestation in Fuyang City in more than a decade. Doing a good job in controlling late rice brown planthopper concerns food production security, farmers' income growth and rural social stability. Government departments at all levels in Fuyang City attach great importance to this, truly treating the control of late rice brown planthopper as the top priority in current agriculture and rural work, and making concerted efforts to fight this battle against brown planthopper. The Fuyang City Agricultural Machinery Extension Station introduced and promoted a new type of stretcher-type high-pressure sprayer that had once made great contributions to increasing the yield and income of Dongqiao Chinese torreya (Torreya grandis), and now it has once again rendered outstanding service in brown planthopper control.
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Characteristics of the Fuding Damao Tea Cultivar and an Introduction to the Tea Types It Is Suitable For Processing
It belongs to the clonal propagation line. It is a national-level improved cultivar. It originates from Fuding County, Fujian Province. It has a cultivation history of one hundred years to date. It has been introduced and cultivated in Zhejiang, Jiangsu, Jiangxi, Hubei, Anhui and other provinces. It is one of the high-yield, high-quality cultivars suitable for growing in low-hill red soil. Morphological characteristics: small tree type, large-leaf, early-budding cultivar. The plant is relatively tall and upright, with plump buds and leaves covered in abundant silvery-white downy hairs, and strong tenderness retention. Spring buds sprout in mid-March, and the peak period of one bud and three leaves is in early April, with a hundred-bud weight of 104 grams. It can be processed into famous teas of different appearances. It is not only a premium raw material for processing "
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How to prevent and treat deformed mushrooms? First, identify the common types
Deformed mushrooms take many forms. The main ones commonly seen in production are: landmine mushrooms, hollow mushrooms, big-bottom mushrooms, hard cap opening and early cap opening, red roots, and water rust spots. Landmine mushrooms. The main cause is that the casing soil material is too coarse, the soil is rather hard, the casing layer is thick, the surface of the casing layer contains relatively little water, while the temperature and humidity conditions of the lower part and the substrate are suitable for fruiting body formation and growth, so fruiting bodies are easily differentiated and formed on the surface of the substrate or in the middle and lower layers of the casing soil, and then push out through the soil surface. Solution: choose high-quality humus soil, preferably peat soil, and mix in a certain amount of rotted cow manure or wheat bran, etc. in proportion; when collecting and sun-drying the soil, it should be sieved so that most soil particles remain comparable in size to @#@245@#@ particles, with the largest about 1/2 the size of a corn kernel, accompanied by some soil particles; casing is generally about 3 cm, and if conditions permit, first apply a layer of coarse soil 1-1.5 cm thick, then fine soil, and pay attention to maintaining uniform moisture content.
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Unique and Colorful: A Brief Discussion of Butterfly-Type Floral Art in Chinese Cymbidiums
The "butterflies" among Chinese orchids, in all their myriad forms, have formed one of the most captivating groups in Chinese cymbidiums, collectively known as "Chinese Cymbidium Butterfly-Type Floral Art." Concept: In the flowers of Chinese cymbidiums, if 2 sepals (lateral sepals) or 2 petals (petals) undergo partial or complete mutation into a lip, then the flower colors of this type of orchid become richer and more varied. Usually the lip-transformed perianth segments bear colors such as green, white, red, and pale yellow. These mutated perianth segments curl backward or outward at the tip just like a lip (labellum), and their shape and color resemble butterfly
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Detailed Explanation of the Forcing Cultivation Techniques for Softening-Type Chicory
After the roots are harvested, it is best to subject them to a period of low-temperature treatment before carrying out forcing cultivation. The duration of the low-temperature treatment varies by variety; early-maturing varieties can be treated for a shorter time, while late-maturing varieties should be treated for a longer time, so that tighter chicons can be formed. The methods of forcing cultivation are quite flexible and can be broadly divided into the soil culture method and the water culture method. The soil culture method is a relatively traditional cultivation method and can be carried out by digging trenches in the ground inside plastic tunnels or greenhouses. Its characteristics are low cost and simple operation, but the fact that the chicons formed are not clean is its greatest drawback. The water culture method requires specialized
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Product Introduction to Kekeling, a New Type of Silkworm Disinfectant
(1) Content Introduction Disinfection and disease prevention are key technical measures for stabilizing silkworm crops and increasing cocoon production. Researching and promoting silkworm disinfectants that are highly effective, low in toxicity, broad-spectrum in sterilization, stable in medicinal properties, non-corrosive, low in cost, and simple and safe to use is a topic that the sericulture industry in all countries attaches importance to. In recent years, various silkworm-producing areas in China have developed and promoted numerous silkworm disinfectants, and many have been restricted in their promotion and application due to reasons such as unstable medicinal properties, strong corrosiveness, and insufficiently broad-spectrum sterilization. The new silkworm disinfectant Kekeling was jointly developed through collaborative research by South China Agricultural University, the Shunde Chemical and Biological Research Institute, and
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