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Detailed Explanation of Key Techniques for Transplanting Large Spruce Saplings
Seedling transplanting is one of the main greening methods for urban streets, landscaping, and the construction of ecologically prosperous villages and towns. In recent years, the transplanting of large saplings has become particularly important because it takes effect quickly, achieves remarkable results, and is not easily damaged by human activity, and it has gained widespread recognition. However, large sapling transplanting is also constrained by factors such as high cost, large investment, and low survival rates. Therefore, mastering transplanting techniques according to the biological characteristics of different tree species, improving survival rates, and increasing green areas play a positive role in promoting ecological civilization construction. Qinghai
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How to carry out maintenance and management of large spruce saplings after transplanting
Large spruce saplings over 40 years old have weak regeneration capacity after transplanting. To ensure their survival, maintenance and management of transplanted large spruce saplings is especially important. As the taste of urban construction keeps improving, the scale and grade of urban greening and beautification also rise accordingly, requiring the greening and beautification effect to be shown within a relatively short time, so a considerable number of tall trees need to be transplanted. Hebei Saihanba Mechanical Forest Farm, as the largest larch timber forest base in North China, also shoulders the mission of windbreak, sand fixation and water conservation, and for many years has provided
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Identification and Control Methods of the Spruce Sawyer Beetle
The spruce sawyer beetle (Monochamus urussovi Fisher), also known as the spruce black longhorn beetle, belongs to the order Coleoptera, family Cerambycidae. In China it is distributed in the Northeast, Inner Mongolia, Hebei, Shandong, Jiangsu, Shaanxi and other places. It mainly damages Picea koraiensis (Korean spruce), Picea jezoensis (Jezo spruce), Abies nephrolepis (Khingan fir) and others, and is a major pest of coniferous timber in northern China. Damage characteristics: the larvae damage felled trees, weakened standing trees, wind-thrown trees and logs in timber yards, forming thick galleries; the adults gnaw the tender bark of small branches of living trees. Morphological characteristics: adult body length 21-33
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Identification and Control Methods for the Great Spruce Bark Beetle
The great spruce bark beetle [Dendroctonus micans (Kugelann)] belongs to the order Coleoptera, family Scolytidae. It is mainly distributed in Austria, Belgium, Czech Republic, Slovakia, Denmark, Finland, France and other countries. In China, it has been found in the Makehe forest area of Qinghai Province. It mainly damages some species of Picea (spruce), and occasionally some species of Pinus (pine) and Abies (fir), as well as European larch and Douglas fir. Damage characteristics: adults and larvae attack weakened trees and dead standing trees; during outbreaks, they can attack healthy trees, severely disrupting the trees' transport function,
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Detailed Explanation of Spruce Seed Collection, Seedling Cultivation and Afforestation Techniques
Spruce, also known as Picea meyeri, coarse-branched spruce and rough-barked spruce. Its wood is relatively good, slightly soft, elastic and easy to work, and has many uses such as making high-quality building materials, furniture and mine props. Spruce is suited to a temperate humid climate and is one of the main timber tree species in North China, Northwest China and Southwest China. 1. Seed collection In the natural forest areas of the northwest, spruce seeds mostly begin to mature in October, and seed collection can begin once the cones turn from green to yellow-brown or chestnut-brown. The mother trees for seed collection are best chosen from 30-50 year old plants that are robust in growth, good in stem form
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Symptoms and Control Methods of Spruce-Bird Cherry Cone Rust
Spruce-bird cherry cone rust occurs in Inner Mongolia, Jilin, Heilongjiang, Sichuan, Yunnan, Tibet, Shaanxi, Gansu, Qinghai, ** and other places in China. The disease affects Picea asperata, Picea purpurea, Picea likiangensis, Picea brachytyla var. complanata, Picea jezoensis, Picea schrenkiana, ** spruce, etc. Symptoms: The disease affects the upper surface of the scales of female cones. Infected scales are twisted, recurved and disorganized. On the upper surface, many small purple-brown spherical bodies are produced in a single layer; these are the aeciospore-bearing structures (aecia) of the pathogen, and sometimes aecia are also produced on the lower surface of the scales. Pathogen: The pathogen is Thekospora areolata (Fr.) Magn.
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Symptom Identification and Control Methods of Spruce Rust Disease
Spruce rust disease is distributed only in the **Tianshan region. The disease has a high incidence rate, but few diseased cones. Infected cones stop growing and quickly die. Symptoms: The disease affects the scales of both female and male cones. Infected female cones are slender and small, curved, with open scales; the bracts become lanceolate, and the cones turn yellow and stop growing. The scales are small, yellow, and bear orange-red protruding telial pustules. Pathogen: The pathogen is Chrysomyxa deformans (Diet.) Jacz.
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Symptoms of Spruce Snow Mold and Its Control Methods
Spruce snow mold is mainly distributed in some countries north of 40 degrees north latitude, where it damages tree species such as Japanese cedar, fir and spruce. In China, this disease has only been found damaging **spruce. Symptoms: after the above-ground parts of the whole plant and the needles are infected under the snow, they are covered with a grayish-brown mycelial layer, or the mycelium invades the interior of the host, causing the tree to become moldy and rot and to suffocate. In mild cases, the mycelial layer is cottony; in severe cases, it is felt-like. Its color is brown in the early stage, and white and grayish-brown when the snow is about to melt. When the disease is mild, the damage is distributed in clumps. When severe, the trees fall over in rows.
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Symptoms and Control Methods of Spruce Leaf Rust
Spruce leaf rust is distributed in Sichuan, Yunnan, Gansu, Qinghai, **, Taiwan, China and other places. The disease damages Picea likiangensis, Picea asperata, Picea crassifolia, Picea brachytyla var. complanata, Picea linzhiensis, Picea schrenkiana and Picea obovata, etc. Symptoms: When buds are infected, the needles on the newly grown tender shoots turn yellow or orange-yellow, short and thick; orange-yellow cushion-like telia or blister-like aecia are produced on the diseased leaves; the diseased buds resemble a yellow flower, and soon the diseased leaves turn black and die. On infected 2-year-old leaves, parts turn yellow, and blister-like aecia or orange-yellow cushion-like
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Identification and Control Methods of the Spruce Root Bark Beetle
The spruce root bark beetle (Hylastes cunicularius Erichson) belongs to the order Coleoptera, family Scolytidae. In China it is distributed in ** and Sichuan, mainly damaging spruce, and is especially severe on artificially regenerated seedlings. Damage characteristics: it feeds on the roots of spruce seedlings and attacks freshly cut stumps. Morphological characteristics: adult body length about 4.5mm, dark brown, slightly glossy, with sparse bristles. The frons is narrow and long, covered with flat, shallow, dense punctures each bearing 1 hair; the lower half of the frons is low and flat, the upper half protrudes
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