Planting Technology Lists
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Spruce snow blight
[distribution and harm] Foreign countries are distributed in North America, Northern Europe and Central Asia, harming European spruce (Piceaabies), white spruce (P.glauca), black spruce (P.mariana) and so on. It is distributed in Tianshan Mountain, Altai Mountain, Western Junggar Mountain and Kunqu Mountain in China. Damage to spruce (P.schrenkiana), Siberian spruce (P.obovata), Qinghai spruce (P.crassifolia) and Sichuan spruce (P.balfouria7)
2019-01-16 -
Seedling management techniques of spruce species
Spruce is an evergreen tree, which is widely distributed in China. There are 20 species and 5 varieties, and 2 species are introduced and cultivated. It is the main reforestation tree species in the cold temperate alpine forest region of our country. It is shade-tolerant. The tree is 50 meters high, 1.5 meters in diameter at breast height, flowering in late May, and cones mature from September to October. It comes from the south of Xiaoxing'an Mountains and the Huma River Basin on the north slope of Daxing'an Mountains in Heilongjiang Province. Suitable for deep soil, moist and good drainage environment, strong cold resistance, lateral roots spreading, weak wind resistance, easy to fall. It is an acidic tree species in temperate mountains.
2019-01-16 -
Spodoptera litura
Spruce cone roll moth [Cydiastrobilella (Linnaeus)], alias spruce cone roll moth, belongs to Lepidoptera. It is distributed in Heilongjiang, Inner Mongolia, Shaanxi, Gansu, Ningxia, Qinghai, * * and other places in China, mainly harming spruce and larch. The larvae damage cones and seeds, the injured cones bend and produce fat, and the scales of fruit drop often do not open. The morphological characteristics of adults are about 6mm in length and 10-13mm in wingspan. Head, chest and abdomen are grayish black. The lower lip extends forward and bends slightly
2019-01-16 -
Beautiful scenery tip rust of spruce
Beautiful scenery tip rust is a newly discovered disease on Qinghai spruce, which is mainly distributed in the spruce forest at an altitude of 2600-2800m in the eastern section of the northern slope of the Qilian Mountains in western Gansu. It is second only to Qinghai spruce leaf rust, and the onset period is about one month earlier than Qinghai spruce leaf rust. The diseased buds of symptomatic spruce germinated 10-15 days earlier than those of healthy buds. At the beginning of June, the diseased buds expanded into a conical shape, showing peach red, and the surface was densely punctuated, which was called the diseased spore apparatus. The new leaves on the tender shoots are deformed
2019-01-16 -
Spodoptera litura
Spruce yellow roll moth [Archipsoporanus (Linnaeus)], alias pine bud leaf roll moth, pine thick leaf roll moth, belongs to the family Lepidoptera. It is distributed in Heilongjiang, Liaoning, Central and South China, and can harm Pinus elliottii, loblolly pine, Masson pine, Korean pine, spruce and juniper. The damage characteristics of larvae eat axillary buds, flower buds and male flowers, eat needles, affecting tree growth and seed yield. The morphological characteristics of the adult are 10-12mm in length and 22-30mm in wingspan. Male moth
2019-01-16 -
Spruce root bark beetle
Spruce root bark beetle (HylastescuniculariusErichson) belongs to the family Coleoptera, which is distributed in China and Sichuan. It is mainly harmful to spruce, especially to artificial regeneration seedlings. The damage features feed on the roots of spruce seedlings and damage the newly felled stumps of trees. The morphological characteristics of the adult are about 4.5mm, dark brown, slightly glossy and sparse bristles. The forehead is narrow and long, covered with shallow, dense and dim sum engraving points, the lower half of the forehead is low and flat, and the upper part is protruding.
2019-01-16 -
Leaf rust of spruce
Spruce leaf rust is distributed in Sichuan, Yunnan, Gansu, Qinghai, Taiwan and other places. The disease harms Lijiang spruce, scaly spruce, coarse spruce, oil wheat spruce, Linzhi spruce, snow spruce and Siberian spruce. Symptoms: the young buds are susceptible, the needles on the newly growing shoots turn yellow or orange, short and thick, and the diseased leaves produce orange cushion-like winter spores or blister-like spores, the diseased buds look like a yellow flower, and soon the diseased leaves turn black and die. The susceptible 2-year-old leaves turn yellow locally, producing blister-shaped spores, or orange-yellow cushions.
2019-01-16 -
snow mold of spruce
Spruce snow mold is mainly distributed in some countries north of 40 degrees north latitude, harming cedar, fir and spruce trees. The disease was found only on spruce trees in China. Symptoms: The whole plant and needles on the ground are infected under snow, covered with gray brown mycelium layer, or mycelium invades the host interior, causing mildew and suffocation of trees. The hyphae layer of mild disease was cotton-wool, felt-like in severe cases, brown in early stage, white and grayish brown when it was about to melt. When the disease is mild, the disease is distributed in clumps. In severe cases, trees fall into rows
2019-01-16 -
Rust of spruce
Spruce rust is only distributed in Tianshan area. The incidence of the disease is high, but there are few diseased cones. The susceptible cones no longer grow and die quickly. Symptoms: the disease harms the scales of male and female cones. The susceptible female cone is thin and small, curved, the scales open, the scales become lanceolate, and the cones turn yellow and no longer grow. A pile of teliospores with small yellow scales and orange-red projections. The pathogen is Chrysomyxadeformans (Diet.) Jacz.
2019-01-16 -
Thick plum cone rust of spruce
Spruce thick plum cone rust occurs in Inner Mongolia, Jilin, Heilongjiang, Sichuan, Yunnan, Xizang, Shaanxi, Gansu, Qinghai, * and other places in China. The disease harms thick branch spruce, yew spruce, Lijiang spruce, oil wheat spruce, fish scale spruce, Xueling spruce, * spruce and so on. Symptoms: the disease harms the positive scales of female cones. The susceptible scales are twisted, anti-curled and disordered. There are many purple-brown globules on the front, which are arranged in a layer, which are the sporidium of the pathogen, and sometimes the spores are also produced on the back of the scale. Pathogen: the pathogen is Cunninghamia lanceolata
2019-01-16