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Key Points of Angelica sinensis Propagation Techniques and Detailed Explanation of Seedling Methods
Angelica sinensis is propagated by seed, generally using the method of raising seedlings and transplanting, though direct sowing can also be used. 1. Seedling raising and transplanting (1) Seed selection: After seed selection, Angelica sinensis yields about 14.6 kg more per mu than unselected seeds. The main selection method is ear selection. At harvest time, when the seed coat turns sky blue or pink and the flowering stem droops, select fruit ears that have the characteristics of this variety, grow well and vigorously, are free of pests and diseases, and are highly mature; cut them off together with the flowering stem, dry them in a ventilated and dry place, thresh, and store for later use. Because Angelica sinensis seeds do not mature uniformly, har
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Planting methods and care tips for the London plane tree
Morphology: 20-30 m tall, crown broadly bell-shaped; bark grayish brown to grayish white, peeling off in thin flakes. Young branches and young leaves densely covered with brown stellate hairs. Leaves palmately 5-7 lobed, deeply lobed to the middle, lobes longer than wide, leaf base broadly wedge-shaped or truncate, leaf margins toothed, palmately veined; stipules ring-shaped. Inflorescence head-like, yellow-green. Most nutlets clustered into whole-leaf spheres, 3-6 spheres in a string, persistent style long, bristle-like, fruit stalk long and drooping. Distribution: native to Europe; also distributed in India and Asia Minor. Habits: highly adapted to urban environments
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What are the control methods for the Chinese parasol tree psyllid?
The Chinese parasol tree (Firmiana simplex) is one of the main urban landscaping tree species in northern China, with a tall, straight trunk, attractive leaf shape, and good shading effect. However, the Chinese parasol tree psyllid causes serious damage, greatly affecting its ornamental effect. After long-term observation, garden workers have gradually worked out the occurrence and development patterns of the Chinese parasol tree psyllid, carried out effective control, and accumulated certain experience, which is introduced below for reference. I. Damage characteristics and symptoms. The Chinese parasol tree psyllid, also known as the Chinese parasol tree split-head psyllid, belongs to the order Homoptera, family Psyllidae. It uses nymphs and adults to suck sap on Chinese parasol tree leaves or young twigs and tender trunks,
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Identification and Control Methods of the Chinese Parasol Tree Psyllid
Morphology: Adult body length 5.6 to 6.9 mm, yellow-green; head broad horizontally, vertex deeply cleft, frons exposed; compound eyes hemispherical and protruding, brown; antennae yellow; wings colorless and transparent, veins tea-yellow; claws black; dorsum of abdomen pale yellow, with a brown band along the anterior margin of each segment. Egg spindle-shaped, length 0.5 to 0.8 mm, slightly transparent, pale yellow or yellow-brown when newly laid, pale reddish-brown before hatching. Newly hatched nymph rectangular, tea-yellow tinged with green, wing pads slightly visible; mature nymph long oval, length 3.0 to 5.0 mm, darker in color, wing pads clearly visible.
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Control methods and key technical points for the peach fruit moth
(1) Manual and physical control. Scraping bark to destroy pupae: during the dormant season of winter jujube, manually scrape off the coarse bark and scaly bark on the trunk and branch forks; beforehand, spread plastic sheeting under the tree to collect the bark and cocoons, then pour boiling water over them in a centralized manner. Blacklight trapping of adults: during the adult emergence period, set up blacklight lamps (insect-killing lamps) to trap and kill adults. From May to June, remove the moth cocoons missed by chemical control. From early September, tie grass bundles at the trunk and branch forks to attract the insects for pupation, then take them down and burn them. (2) Chemical control. The key is
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How to prevent single-clove garlic? Garlic farmers need to master these management methods
1. For autumn-planted garlic, plow and turn the land immediately after the previous crop is harvested, with a plowing depth of more than 28 cm, plow finely and harrow thoroughly, level the land and make beds. The bed width should preferably be 1.5-2 m, and the bed length generally should not exceed 30 m. For convenience of watering, 20-25 m is preferable. Garlic is a shallow-rooted crop, with shallow roots and weak fertilizer uptake capacity, and it has relatively high requirements for the quality of base fertilizer. Choose a complete-effect, high-quality organic fertilizer and apply it fully in one application. For night soil, do not use raw manure; before application it must be fully decomposed, crushed and mixed evenly, to prevent fermentation in the field, which can cause garlic maggot damage and affect seedling growth and development.
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Comprehensive Prevention Methods for Two Common Summer Diseases in Pigs
I. Piglet coccidiosis: This disease occurs mostly in late spring and early summer, mainly affecting suckling piglets aged 6-15 days. Drug prevention and treatment: 1. Toltrazuril: Piglets are given a single oral dose of toltrazuril at 3-6 days of age, at 20 mg per kg of body weight. 2. Sulfonamides: The therapeutic dose of sulfadimidine (sulfamethazine) is 20-25 mL per kg of body weight, once a day for 3 consecutive days. II. Swine streptococcosis: It occurs mostly in the warm season from May to November and is a zoonotic infectious disease. Prevention: per ton of feed use
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Diagnosis and Prevention and Treatment Methods for Campylobacteriosis in Chickens
Campylobacteriosis in chickens, also known as avian vibrionic hepatitis, is an infectious disease of young or adult chickens caused by Campylobacter infection. The disease is characterized by hemorrhagic necrotic hepatitis with fatty infiltration, high morbidity, low mortality, and often a chronic course. Campylobacter is an important food poisoning bacterium for humans and can cause symptoms such as fever, vomiting and diarrhea in humans. Therefore, it is listed as one of the key quarantine items for meat hygiene inspection. 1. Pathogen The pathogen of this disease is a Gram-negative, motile, microaerophilic
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Identification and Control Methods of Physiological Diseases of Reishi Mushroom
Due to the action of abiotic factors, the physiological metabolism of reishi mushroom is often disrupted, leading to disease. Symptoms After physiological diseases occur, deformed mushrooms grow, and the mycelium stops growing or grows poorly and shrinks, and excessive vegetative growth can also occur. Causes During cultivation, improper management leads to poor nutrition of the mushroom body; the temperature in the cultivation room is too high or too low, and ventilation is poor; the water content of the substrate is too high or too low, or the pH is unsuitable; lighting is inconsistent; the bed contains excessively concentrated harmful gases; pesticides and growth regulators are used improperly.
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A Detailed Guide to Watering Phalaenopsis Orchids: Methods and Precautions
The key to growing Phalaenopsis orchids lies in the supply of water. The environment suitable for Phalaenopsis roots must have the following: warmth (15-30°C); moderate moisture with good ventilation; a weakly acidic pH; light fertilizer; and sunlight (some leafless or deciduous Phalaenopsis orchids carry out photosynthesis through their roots). In the wild, Phalaenopsis orchids cling to tree trunks or rocks with their roots, with leaves and flower stems hanging down, growing upside down. Abundant rainwater keeps the roots from feeling too dry; in fact, Phalaenopsis roots are not afraid of moisture. So when we use pots
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