-
How to control oleander aphids? A full breakdown of practical methods
Oleander aphid, also known as the kapok aphid, belongs to the order Homoptera, family Aphididae. It is distributed throughout southern China, as well as in various countries of Southeast Asia, Africa, and South America. Damage symptoms: nymphs or aphids attack oleander, stunting the growth of affected new shoots, turning the upper and lower leaves black, and causing flower buds and flowers to develop incompletely and open abnormally, reducing ornamental value. Morphological characteristics: the wingless parthenogenetic female is oval in shape, 2.3 mm long, yellow like a banana peel. The frontal tubercles are raised, higher than the median frontal tubercle; the antennae are dark, with coarse tile-like sculpturing; the rostrum reaches the middle coxae. The cornicles are long and tubular, dark
-
How to make a banyan bonsai? A full breakdown of the detailed method and steps
The banyan tree is an evergreen tree species of the genus Ficus in the mulberry family. It likes light and prefers a warm, humid, rainy climate. It is not cold-tolerant and slightly shade-tolerant, and is suited to growing in fertile, loose, moist alluvial soil. The branches of the banyan tree produce aerial roots that can hang down to the ground, giving it a very good ornamental effect. Its crown is relatively spreading and it has strong sprouting ability, making it a good bonsai tree species. I. Seedling sources Banyan stock is mainly selected from seed-grown seedlings and cutting-grown seedlings. Sowing is generally carried out in February to March each year, and the small seedlings can be divided and transplanted after 1 year. Cuttings are usually taken in February to March each year, and are divided and transplanted after 1 year.
-
Rabbits Have Particular Water Needs: A Full Breakdown of Scientific Watering Methods
As the saying goes, "Better to lack a handful of grass than a mouthful of water," which fully illustrates the importance of drinking water for rabbits. So, what exactly does water do for a rabbit's growth, what happens after a rabbit is short of water, and how do you give rabbits water scientifically? 1. The role of water in rabbit growth. In the various tissues of a rabbit's body, water accounts for 70%, and in the blood it can reach 80%; the water content of bones, muscles and internal organs is 45%-75%. Not only is water indispensable for the digestion, transport and absorption of nutrients from all kinds of feed, the excretion of waste products and toxins produced by metabolism is also inseparable from water.
-
How to control subsurface pests in upland rice? A full breakdown of practical techniques
In recent years, with the application and promotion of dry-raised transplanting techniques, upland rice cultivation in Gejiu City has become a new highlight of economic growth in mountainous rural areas. How to do a good job in controlling subsurface pests is an important technical measure for developing upland rice production and ensuring increased yield and income. The common subsurface pests of upland rice mainly include white grubs (the larvae of scarab beetles), wireworms (the larvae of click beetles), mole crickets, and cutworms (cut worms). These pests live in the soil during their damaging period, feeding on seeds, young sprouts, roots and stems, causing missing plants, gaps in rows, or
-
What precautions should be taken when processing snake venom? A full breakdown of the key operational points
1. Pay attention to safety when extracting and processing snake venom. To strictly prevent venomous snakes from injuring people, the movements for releasing the snake during and after venom extraction must be quick. When returning a snake that has been milked to its cage, first place the snake's body inside, and when the snake's head approaches the edge of the container opening, let go quickly. If you cannot withdraw your hand in time when releasing the snake, you can easily be bitten by the snake striking back. 2. Venom extraction equipment must be strictly sterilized. 3. If the venomous snake clamps onto the vessel and will not let go, you may gently swing the snake's trunk; if it still will not release its bite, you may gently twist its neck, or use a small stick or your finger to stimulate the snake's cloaca. Never pull hard
-
How Are Candied Jujubes Processed? A Full Breakdown of the Production Flow
Candied jujubes are dried preserves made from fresh jujubes. The processing technique is as follows: 1. Raw material selection: Generally, varieties with large fruit, small pits, loose flesh, thin but tough skin, and relatively little juice should be chosen. The best fruit maturity is when the green color begins to fade and the fruit turns milky white. 2. Grading: Grade the jujube fruits by size, removing deformed fruits, fruits affected by pests or disease, overripe fruits, and damaged fruits. 3. Slitting: To facilitate sugar penetration and flattening into shape, the fruit surface is usually slit. The jujube fruits are fed into the channels of a jujube cutting machine (slitting machine) to be slit, with the cutting depth
-
How to grow Dawn Redwood (Metasequoia glyptostroboides) from seed? A full breakdown of the key techniques
The techniques for growing Dawn Redwood from seed are: 1. Seed collection: Dawn Redwood flowers in early to mid-March, and the cones reach maturity from mid-October to early November of the same year. When the cone scales turn from green to yellowish-brown, crack slightly, and a small amount of seed falls out, the seeds are ready to collect. After the cones are collected, spread them out to air-dry or expose them briefly to the sun; the scales open and the seeds fall out. 2. Seed treatment: Before sowing, soak the seeds in cold water for 3 to 5 hours so they absorb water and swell fully, which aids germination and ensures even emergence. 3. Sowing: From late March to early April,
-
How to grow azaleas? A full breakdown of cultivation and management key points
(1) Potting and repotting: Use yellow mud + leaf mold as the main components, mix in a little river sand as the growing medium, ensure the soil is on the acidic side, and avoid heavy clay soil. When first potting, choose as small a pot as possible, then gradually move to larger pots; azaleas do not need repotting every year, and repotting and soil replacement should only be considered when the roots have filled the pot and water no longer drains out easily. (2) Cutting propagation: The plum rain season is the best time for cuttings, when the new azalea shoots are already semi-lignified and the temperature and humidity are suitable, which is very favorable for the rooting and survival of the cuttings. Take healthy new shoots about 5-7 cm long, remove the lower leaves, keep 3-4 top leaves, and use mountain soil mixed with yellow sand as the base
-
How to Store and Keep Sweet Potatoes Fresh? A Full Breakdown of the Technical Points
Sweet potato (Ipomoea batatas) is a traditional product of Shanting District. Since 2000, 3 townships in this district have processed sweet potato jujube for foreign trade companies every year, with an annual processing volume of 1.6 million kg of sweet potato jujube, and have thus developed a set of sweet potato cellar storage and preservation techniques with very good results. The key technical points are introduced as follows: 1. Cellar. Choose a place with relatively high terrain and soil mainly of red loam to build the cellar. The depth of the cellar is preferably about 3 m, and the two storage chambers for sweet potatoes should be no less than 1.8 m in height and no less than 2.5 m in length and width.
-
How to Safely Transport Live Fish? A Full Breakdown of Practical Methods
1. Sealed transport: Sealed transport places the fish and water in a sealed, oxygen-filled container for transport. Its characteristics are small volume and easy portability; for general adult fish transport, within 8 hours there is no need to change the water midway, the seal is tight, and the survival rate is high. A single oxygen fill can keep fry alive in the container for more than 20 hours, and it is even more convenient for long-distance transport of large quantities of fry and fingerlings. Methods such as oxygen-filled sealed transport in plastic bags and oxygen-filled sealed transport in plastic buckets can be used. 1. Oxygen-filled sealed transport in plastic bags: Fill the plastic bag with clean clear water, with the water volume accounting for 1/3 of the bag's total capacity
条件筛选