-
Detailed Explanation of Oleander Cultivation and Management Methods and Technical Key Points
Oleander, also known as yangtao, bannianhong, or liuyetao, originated in Iran and India. It is an evergreen shrub or small tree of the Apocynaceae family. Dwarf types suitable for pot cultivation reach 60-80 cm in height, while tall types can grow to over 3 m. It blooms from late May each year, and the flowering period is extremely long, lasting until October. Flower colors include peach red, pink, yellow, white, and others, with peach red being the most common. The flowers are double-petaled and have a delicate fragrance. Every year during the flowering season, green leaves set off red flowers, gorgeous and elegant, offering both foliage and flowers to admire, combining the beauty of peach and bamboo.
-
Oleander Planting and Cultivation Methods and Key Technical Points
1. Planting time is in spring. Open-field cultivation in the Yellow River basin and areas to its south; container cultivation in cold northern regions, overwintering indoors. When transplanting, the plant must be planted with a soil ball. The planting site must be sunny and free of standing water. Summer transplanting is also possible, but some branches must be pruned off and an appropriate number of leaves cut away to reduce water transpiration and promote survival. For container plants, repot once every 2-3 years, using a growing medium of 6 parts leaf mold and 4 parts river sand; before planting, a horseshoe chip can also be placed at the bottom of the pot as a base fertilizer. Before planting, shorten the branches
-
Prevention and Treatment Methods and Technical Key Points for Necrobacillosis in Deer
Deer necrobacillosis is a chronic infectious disease caused mainly by the strictly anaerobic Fusobacterium necrophorum as the primary pathogen. It can occur in all four seasons, but is more prevalent in summer and autumn. The main source of infection is diseased deer, and deer of all ages can be infected. Skin damage is the main route of infection, but infection can also occur through trauma of the digestive tract, damage from antler sawing, wounds of the birth canal, and omphalitis. In addition, wet and muddy ground, uneven surfaces, hot and humid weather, and poor feeding and management tend to promote the occurrence of this disease. If necrobacillosis occurs in a deer herd, measures should be taken immediately
-
Key Technical Points and Management Methods for Uniform Silkworm Larva Development
Uniform silkworm larva development is the primary guarantee for implementing automated mounting of silkworms (spinning on frames), and an important prerequisite for ensuring high-quality and high-yield silkworm cocoons. To achieve uniform silkworm larva development, the following aspects of work must be done well: 1. Properly protect the silkworm eggs after receiving them to promote uniform hatching. Immediately after receiving the silkworm eggs, pour them out and spread them evenly in a foil-lined tray with white paper, and keep them in an environment with a temperature of 26°C, a wet-dry difference of 1.5-2°C, and darkness (covered with black cloth) for protection. On the morning of the hatching day at 4-5 o'clock, uncover the covering, turn on
-
Prevention and Control Methods and Technical Key Points for Canine Distemper in Foxes, Raccoon Dogs and Mink
In some fox and raccoon dog farms and mink farms, outbreaks of canine distemper have occurred. Regarding the prevention and control of canine distemper, the following views are discussed: Concerning the prevention and control of canine distemper, after decades of research, a variety of attenuated and inactivated vaccines have been developed in terms of its etiology, pathogenesis, epidemiological characteristics, clinical symptoms, pathological diagnosis and immunoprophylaxis, and many vaccines have already been supplied to the market as official commercial products. However, in recent years, the prevalence of canine distemper and the losses it has caused to the world's dog industry and fur animal breeding industry have far exceeded
-
Methods and Technical Key Points for Maintaining Pregnancy in Foxes
Under normal circumstances, after a female fox mates, the sperm and egg combine to form a zygote, and she then enters the gestation period. The average gestation period of foxes is 52 days. In the early stage of gestation, embryonic development is relatively slow, and in the later stage it develops more rapidly. After 30 days, an increase in abdominal circumference can be seen, and the vulva droops slightly, becoming more pronounced as gestation progresses. During gestation, due to fetal development, the female fox's metabolism is vigorous, her appetite increases sharply, and her body weight increases accordingly, while her coat also appears glossy. The female fox shows a gentle and timid temperament, is sensitive to surrounding foreign objects and unfamiliar sounds, moves slowly, and likes to lie down to rest and bask in the sun.
-
Detailed Explanation of the Key Technical Points for Long-Term Fresh Preservation and Storage of Jujubes
1. Technical characteristics. Applying this new technology can safely preserve fresh winter jujubes for 6 to 12 months, with a rotten fruit rate below 5%. After storage, the fruit does not change color or shape and has no off-flavor, and the sensory quality can reach 80% to 95% of that before storage. The preservation rate of the main nutrient vitamin C (VC) exceeds 80%, and the preservation rates of moisture and soluble solids content are not lower than 95%. From postharvest storage of the fruit to sale, no chemical substances or radiation are used to treat the fruit, and green fruit with high VC content can be supplied to consumers throughout the year.
-
Planting Methods and Key Technical Points for Dwarf Lilyturf (Ophiopogon japonicus)
Generally, planting is carried out on cloudy days from mid-April to early May each year. Trench planting and hole planting are usually adopted. For trench planting, open trenches 5 cm deep at a row spacing of 15 cm, first apply diluted pig manure water in the trenches, then plant seedlings at a plant spacing of 6-8 cm, with 3 plants per clump; after planting, cover with soil and firm it so that the seedlings stand upright and stable, achieving a level ground surface and upright seedlings. In some areas, for trench planting, trenches 5-6 cm deep are opened on the surface of the bed at a row spacing of about 20 cm, and 1-2 seedlings are planted in the trenches at a plant spacing of 15 cm; after planting, cover with soil and firm it. Use 700 kg of seed seedlings per 667 sq m.
-
Mysid Culture Methods and Technical Key Points
(1) Culture species In the 1970s, mysids were cultured in Shantou, Guangdong and Fujian, or collected from natural waters as feed for seahorses; the Shandong Rizhao Mariculture Experimental Station used earthen ponds to culture Neomysis awatschensis and achieved good results. At present, in China along the coast of Shandong, in-depth research has been conducted on the biology of Neomysis awatschensis; in Japan, Neomysis vulgaris, Neomysis japonica, Neomysis perfecta, and Neomysis intermedia have all been studied in terms of live biology or fisheries biology. All of the above species can be listed as culture species.
-
Key Technical Points for Disease Prevention and Control in Pollution-Free Fish Farming
Symbiosis of plants and animals: When aquatic plants and fish live together in the same pond, the fish rarely get sick. The aquatic plants planted in the fish pond are rice or lotus roots, arranged in an east-west direction, with wide row spacing (greater than 33 cm), occupying no more than 50% of the total water area so that the lighting effect is good. The water depth depends on the water tolerance of the aquatic plants; for rice it is generally within 30 cm, and for lotus roots it can generally reach more than 50 cm. The farmed fish can be conventional species or famous, special and improved new varieties. The farming method can be seedling breeding or adult fish farming. Because residual bait, fish feces and so on are deposited
条件筛选