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Identification methods and control techniques for diseases and pests of Schisandra chinensis
Diseases I. Leaf blight 1. Symptoms. Caused by infection with the leaf blight pathogen of Schisandra chinensis, it is a commonly occurring disease. It is prone to occur from late May to early August when temperatures are high, rain is frequent and ventilation is poor. The disease first starts from the leaf tip or leaf margin, with dark brown lesions appearing, gradually spreading downward and expanding to the entire leaf, and finally causing the whole leaf to turn dark brown, dry up and fall off. The fruit then shrinks, becoming early fruit drop. 2. Control. First, choose a plot with good ventilation. Second, strengthen field management, carry out pruning reasonably, and avoid
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Identification and Control of the Oriental Mole Cricket, a Pest of Reishi Mushrooms
The oriental mole cricket (Gryllotalpa orientalis Burmeister) is commonly known as tugou or digou. It belongs to the order Orthoptera, family Gryllotalpidae. 1. Morphology and habits: The adult is 29-31 mm long. The head is conical and dark blackish brown. The pronotum is oval. The forewings are yellowish brown and can extend to the middle of the abdomen; the abdomen is spindle-shaped, blackish brown on the dorsal side and dull yellow on the ventral side, with a pair of relatively long cerci at the tip. The forelegs are specialized as digging legs, and the inner margin of the dorsal side of the hind tibia has 3-4 spines. The nymph resembles the adult in body shape and is gray
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Identification and Control Methods of the Slug Pest in Ganoderma lucidum
Slugs (SLuge), also known as shuiyanyou, bittichong, etc. They belong to the phylum Mollusca, class Gastropoda, order Stylommatophora, family Limacidae. The species that damage edible fungi include the wild slug (Agrioli-naxagrestisLinnaeus), the two-lined sticky slug (PhiolomycusbilimeatusBenson), and the yellow slug (LimaxflavusLinnaeus). 1. Morphology and habits (1) The wild slug has a soft body without an outer shell, dark gray
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Identification of Physiological Disorder Symptoms in Lilies and Their Prevention and Control Methods
Physiological disorders, also known as non-infectious diseases, refer to the disruption of normal physiological metabolic functions in the plant itself caused by factors other than pathogens. The causes of physiological disorders may be internal factors such as mineral element deficiency, tissue aging, or environmental factors such as temperature, light intensity, and abnormal gas composition. I. Leaf scorch: The typical symptom of leaf scorch is the formation of semicircular necrosis at the tip and margin of the leaf, sometimes also manifested as chlorosis or necrosis at the leaf margin, or yellow-green spots appearing on parts of unexpanded or expanded young leaves
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Jigeng 88 super rice passes national certification
Aimed at using science and technology to resolve the contradiction between China's future grain supply and demand, the "Jigeng 88" super rice of the "China Super Rice Research" project, which is included in the Premier's Fund, has achieved a major research breakthrough at the Jilin Academy of Agricultural Sciences and passed national and provincial variety certification. Jigeng 88 is the result of nearly 10 years of dedicated efforts by experts at the Jilin Academy of Agricultural Sciences. It has high yield, good quality, multiple resistance and wide adaptability, with an average yield of 750 kg-800 kg per mu, and its rice quality reaches the national first-grade high-quality rice standard, officially bidding farewell to the northern rice planting problems of low yield and
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Detailed Guide to the Identification Methods for the Seven Species of Box Turtles
Currently, farming box turtles is one of the hotspots in turtle breeding. There are seven extant species of box turtles. Apart from the Malayan box turtle (Cuora amboinensis), which is a common species, the other six are rarely seen. To help farmers select breeding stock correctly, the identification methods for the seven species of box turtles are introduced below: 1. How box turtles differ from other turtle species. Box turtles are a specialized group among turtles. Their plastron is connected in the middle by a ligament, like a hinge, and is movable. After death, the ligament breaks, and the plastron splits into two parts, so people commonly call box turtles "broken-plate turtles."
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Identification and Control Methods of the Oriental Beetle
The Oriental beetle, also known as the black velvet chafer and the velvet chafer, belongs to the order Coleoptera, family Scarabaeidae. It is widely distributed with a diverse diet, and both adults and larvae can cause damage, harming more than 100 species of plants. Adults feed voraciously on several dozen species of garden plants, including poplar, willow, cherry blossom, white magnolia (Magnolia denudata), purple magnolia (Magnolia liliiflora), goldenrain tree, Chinese parasol tree, ornamental peach, crape myrtle, and photinia. Morphological characteristics: adults are 7 to 9 mm long and 4.5 to 6 mm wide, oval-shaped, narrow at the front and broad at the rear; newly emerged adults are brown, gradually turning dark brown or black, with the body surface
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Identification Methods and Technical Key Points for Tea Plant Breeding Materials
Observe the traits of breeding materials, analyze the characteristics and features of various variant materials, select the superior and eliminate the inferior according to breeding objectives, and finally develop new varieties through comparative trials. The identification content is divided into 3 aspects: yield traits, quality traits and resistance. The yield traits of tea plants are mainly reflected in sprouting density and bud-leaf weight, growth speed, length of growth period, regeneration capacity after picking, and recovery capacity after suffering disasters or wounds; quality traits are mainly reflected in the chemical composition, color, pubescence,
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Tea plant breeding yield identification methods and technical key points
A method for measuring the breeding yield of tea plants (individuals, lines or strains). The direct measurement of yield is calculated based on the harvested amount of buds and leaves per unit land area of the tea plant. ① Annual picking calculation method: according to a certain picking standard, pick in stages and batches by plant or plot, then separately count the total yield of each season within a year. In black tea and green tea regions, picking is generally done at the standard of one bud and two or three leaves; in dark tea regions and oolong tea regions, picking is done at the standard of 4-5 leaves at the resting shoot. In the later stages of breeding, yield performance must be measured to identify production potential.
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Identification and Control of the Ganoderma Pest Mezira membranacea
Mezira membranacea (Fabr.) belongs to the order Hemiptera, family Aradidae. 1. Morphology and habits: Adults are 9-12 mm long, black, with the head extending forward and forked at the tip. Antennae are raised, with 4 segments. The lateral margins of the pronotum bulge slightly, with 4 irregular elevations on the anterior half, and the posterior margin distinctly curved at the center. The hemelytra reach the last abdominal segment, and the genital segment is exposed. The membranous area is particularly large. The rostrum is short and brown, extending to the posterior margin of the open rostral groove. Females are larger than males. Late-instar nymphs
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