-
How do you carry out selection and mating of geese? Scientific methods teach you to choose good breeding geese
Selection of breeding geese: Methods for retaining breeding stock Selection of breeding geese should be carried out in the following two periods: the first selection is carried out when the breeding geese are 70-80 days old. Those that grow and develop quickly, have a large body weight, are in good health, and whose plumage color and other appearance characteristics meet the requirements of the breed are retained as breeding geese, and the number retained should be 10%-20% more than the planned number of breeding geese. The second selection is carried out when the breeding geese are 180-200 days old. At this time, the breeding goose flock has developed sufficiently, and the secondary sexual characteristics of the geese are obvious. Breeding ganders are required to have a large head and thick neck, a robust physique, well-proportioned development of all body parts, wings held close to the body, and a prominent frontal caruncle
-
How to Choose Among 8 Major Turtle Species? A Detailed Guide to Practical Selection Tips
Turtle (Chinese pond turtle): The male should have a blackish carapace, a thick, 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; the female should weigh 350 grams, while 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 should be glossy, the temperament gentle, the gap between the upper and lower shells at the tail large, and the cloacal opening wide. Turtles aged 6 years or older are required.
-
How to reasonably choose a scientific formula for oyster mushroom cultivation?
Oyster mushrooms have low requirements for raw materials, and many industrial and agricultural by-products can be used as raw materials. However, whether the carbon-to-nitrogen ratio in the growing medium is scientific and whether the amounts of other supplementary materials added are reasonable are issues that cannot be ignored in oyster mushroom production. At present, bag-cultivated oyster mushrooms mainly use cottonseed hulls as the raw material, so the quality of the cottonseed hulls directly affects the level of oyster mushroom yield and even whether cultivation can succeed. Fresh, high-quality cottonseed hulls should be selected; if moldy and deteriorated cottonseed hulls are used, it will cause contamination by weed molds and may even lead to cultivation failure. Pesticides or other
-
How to choose sweet potato varieties? Provincial Crop Institute experts recommend varieties for spring, summer and autumn planting
Sweet potatoes can be planted in spring, summer and autumn. Spring planting is generally done in March to April, summer planting is generally done in May, and autumn planting is done within one week after the Start of Autumn. Below are several sweet potato varieties suitable for planting in our province. Jinye: a new stem-tip vegetable sweet potato variety. This variety has tender stem tips, low crude fiber content, and good palatability after cooking, making it suitable for use as a vegetable. With open-field cultivation, the stem tips can be picked about 10 times over the whole growing period, with 250 kg of stem tips picked per 667 sq m each time, and a picking interval of 15 days. Per 667 sq m, it can yield
-
How to Choose a Packaging Box for Transporting Live Shrimp? Explained in One Article
Hakodate Seafood Foods Co., Ltd. of Hokkaido, Japan, has developed a fresh-keeping packaging box for transporting live shrimp. This packaging box uses a three-layer structure; the inner layer is a leak-proof ethylene box (the box holds water and live shrimp), the outer layer is made of styrofoam, and between the two layers there is a gap of about 5cm that can be used to hold crushed ice or a chemical refrigerant. The inner box contains seawater that has been disinfected and injected with a certain amount of oxygen. Place the live shrimp in the water, then cover it tightly and it is ready for transport. Using this kind of packaging box to transport live shrimp, even when the outside temperature is as high as
-
How to choose a cotton variety? Follow these principles
Scientific seed selection is the first hurdle in cotton production. The selection of superior varieties should follow these three principles: First, the approval principle. The state stipulates that only varieties approved by the national or provincial variety approval committee can enter production and application, so approved varieties should be purchased as seed for production. Second, the ecological zone principle. The selected variety must suit the ecological conditions of the local cotton region. Third, the maturity principle. Because variety maturity has special requirements for the sowing season and ecological zone, varieties of different maturities cannot be sown out of season.
-
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,
-
How to choose a mushroom yard for shiitake log cultivation
Shiitake log cultivation -- choosing a mushroom yard. Artificial log cultivation of shiitake in China began around 1313 AD, when Wang Zhen's "Agricultural Treatise" recorded the artificial cut-flower method of producing shiitake. This method continued to be used until the 1960s, and only with the spread of the new pure-mycelium inoculation technique did shiitake production achieve new development. The old cut-flower method involved cutting many notches into tree trunks so that shiitake spores from nature could naturally invade, inoculate and grow into shiitake. This extensive cultivation method and production process were relatively simple and required no
-
How to Choose a Yew Variety? Frequently Asked Questions
Currently, Chinese yews are divided into 3 species and 2 varieties, plus a recently introduced new species - the Taxus media. General classification characteristics of the Taxus genus: We generally classify yews mainly based on external morphological features (including leaf shape, leaf length, leaf width, leaf color), seed morphology, and anatomical features of the leaves. Rechard also said that the classification of yews must rely on morphology, anatomy, geographic distribution, and comprehensive studies of depth and diameter, but also said that even so, it cannot completely solve the classification problem
-
How to choose materials for stump bonsai? Master these selection tips
Generally, plants with graceful forms, peculiar roots and trunks, brilliant flowers and fruits, strong sprouting ability, long lifespans, easy shaping, and strong resistance to adverse conditions are preferred. Plants suitable for stump bonsai are usually divided into three categories: conifers and cypresses, miscellaneous broadleaf trees, and flowering and fruiting trees. 1. Conifers and cypresses: Common excellent choices include five-needle pine, black pine, Buddhist pine, true pine, Japanese red pine, Huangshan pine, Chinese juniper, and creeping juniper. 2. Miscellaneous broadleaf trees: Materials vary from place to place. Common ones include Japanese bush cherry, Xiangfei bamboo, green-white bamboo, Buddha belly bamboo, serissa, boxwood, Chinese elm, trident maple, red maple, and banyan. These trees
条件筛选