include tags pears

Peach decay

Knowledge Title: Peach decay Other Title: Dichocrocis punctiferalis Knowledge Content:  The insect Lepidoptera is a Pyralidae. Also known as peach moths, peach moths, peach moths. Fruit tree pests, mainly for peaches, but also for sunflowers and corn and so on. The adult worm is about 12 mm long and has wings of 22 to 25 mm. body, wing yellow. Black patches are on the front, rear and back. The end of the abdomen is covered with black scales, but the females are rare. Oval, about 0.6 mm long. Milky white at the beginning of the birth and dark red after birth. Old cooked larvae are about 15 to 28 mm long. The body color dark red, each body section is born a certain number of black brown hair tumor. The body is 10 to 15 mm long and reddish-brown. It is found in Liaoning, Hebei, Shanxi, Shandong, Henan, Shaanxi and the southern provinces (autonomous regions) in China, with the peach-producing regions south of the Yangtze River basin from Hebei to The State, as well as in Oceania and North Korea, Japan, India, Sri Lanka and Indonesia.……

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Pears

Knowledge Title: Pears Other Title: American Persea Knowledge Content:  The Lauraceae avocado is an evergreen tree. Also known as avocado, avocado. The whole genus is about 50 species, as a fruit tree cultivation of only one kind of pear. Native to Central America. There are many varieties, mainly divided into Mexico, Guatemala and West India three systems. Cultivation is less than 100 years old, but has been widely cultivated in the tropics and sub-tropics, with the United States, Guatemala, Mexico and Cuba the most cultivated. China was introduced in 1918, mainly in Mexico, and now only Guangdong, Fujian, Taiwan, Yunnan has a small amount of cultivation.  The tree is about 10 meters high and has a broad crown. Leaf mutual, leather, oval or egg shape, 7.5 to 40 cm long. Cone flower sequence top raw, flower light green. The nuts are pear-shaped or egg-shaped, 10 to 18 cm long, yellow-green or brown-red, soft fruit.……

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Apple Sky Bull

Knowledge Title: Apple Sky Bull Other Title: apple long-horned beetle Knowledge Content:  Cerambycidae, an insect. Fruit tree pests, mainly for the harm of apples. A common species of apple-branched orrine (Linda fraterna). Female adult syllables are 15 to 18 mm long and slightly smaller. Body long barrel shape, tentacles mostly black, head and front chest plate tawny brown, winged black brown. The larvae are 28 to 30 mm long, have brown heads and have an inverted octagonal concave pattern on the front chest and back. In China, it is distributed in Liaoning, Hebei, Henan, Shandong, Jiangsu, Jiangxi and other provinces. In addition to apples also for the harm to pears, apricots and so on. One generation occurs in a year. After the larvae hatch into the larvae wood and myelin heart, between July and August there are killed branches, in the branches every certain distance bite a round drain hole.……

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Powdery mildew

Knowledge Title: Powdery mildew Other Title: powdery mildew Knowledge Content:  Plant diseases caused by erysiphacesae in fungi. Mostly external parasitic, all or most of the mycelium is exposed to the surface of the leaves, stems, tenders, buds, flowers and fruits of the host plant, and produces a large number of white powders visible to the naked eye, composed of mycelium, spore terriers and separate spores.  Common species of white powder disease is widely distributed throughout the world, especially for the harmful gemini plants. China's main white powder disease is caused by ery-siphe graminis, white powder disease caused by sphotheca fuliginea, and other plants such as melons, beans, hemps, and uncinula Necator’ grape white powder disease; white powder disease from more than 80 trees, including mulberry, pear, persimmon, walnut, chestnut, lychee, papaya, etc., caused by phyllactina corylea; sphaerotheca pannosa The resulting rose is a white powder disease of flowers, etc.……

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Fruit tree size year

Knowledge Title: Fruit tree size year Other Title: biennial bearing of fruits Knowledge Content:  The annual output of fruit trees in each year is obviously showing the phenomenon of high and low fluctuations. Also known as the next year's results, periodic results, or rest. The big year and the small year refer to the year of higher and lower output, respectively. In fruit tree production, size year is a long-term prevalence and has not been completely resolved a major problem, often on fruit production and orchard economic income has a great impact.  Different types of fruit trees, the size of the year is very different: apples, pears, persimmons, walnuts, citrus, lychee and dragon's eye, such as the size of the year performance is heavier, nuclear fruits, grapes, small berries, etc. are lighter. The performance of different varieties of the same fruit tree also varies.……

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Pear round

Knowledge Title: Pear round Other Title: Quadraspidiotus perniciosus Knowledge Content:  The Coccoidea (Coccoidea) Diaspidae of the Homoptera. Fruit tree pests, mainly for pears, apples and so on. International quarantine object. Female adult worm body bright yellow, flat round, length 0.8 to 1 mm. The mouth is silky, prickly, eye and foot degraded. The back is covered with a gray-brown round shell. Male adult worm body orange yellow, has wings a pair. Double-eye yellow. If the worm is 2 years old, the male and female divide. The male worm body is 0.6 mm long, the crustist is oval, and the shell point is at the front of the memeshell. China is distributed in the Northeast, North China and Northwest China. The host plant has pears, apples, flowers and some nuclear fruit trees. In southern Liaoning, Shandong, Shaanxi pear tree occurred in 2 generations, apple tree 3 generations, mainly to 2-year-old if worm and a small number of fertilized female insects in the main branch winter, the following year continued to develop as a hazard, female adult insects in April and May after the end, each female yield if the worm about.……

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Pear round

Knowledge Title: Pear round Other Title: Quadraspidiotus perniciosus Knowledge Content:  The Coccoidea (Coccoidea) Diaspidae of the Homoptera. Fruit tree pests, mainly for pears, apples and so on. International quarantine object. Female adult worm body bright yellow, flat round, length 0.8 to 1 mm. The mouth is silky, prickly, eye and foot degraded. The back is covered with a gray-brown round shell. Male adult worm body orange yellow, has wings a pair. Double-eye yellow. If the worm is 2 years old, the male and female divide. The male worm body is 0.6 mm long, the crustist is oval, and the shell point is at the front of the memeshell. China is distributed in the Northeast, North China and Northwest China. The host plant has pears, apples, flowers and some nuclear fruit trees. In southern Liaoning, Shandong, Shaanxi pear tree occurred in 2 generations, apple tree 3 generations, mainly to 2-year-old if worm and a small number of fertilized female insects in the main branch winter, the following year continued to develop as a hazard, female adult insects in April and May after the end, each female yield if the worm about.……

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Pear elephant worm

Knowledge Title: Pear elephant worm Other Title: Rhynchites foveipennis Knowledge Content:  The Insect Coleoptera is like a worm (Curculioni-dae). Also known as pear tiger, pear elephant nasal worm. Fruit tree pests, mainly for the harm of pears. The adult worm body is 12 to 14 mm long, fuchsia, the head extends forward into an elephant nose-like head tube, the tentacle end 3 sections are obviously wide flat, the front chest has 3 dents on the back. The egg is 1.5 mm long, oval, milky white at first birth, and later turned milky yellow. The larvae are 9 to 12 mm long, short in length and yellow and white. The body is about 9 mm long, yellow-brown to dark brown. Distributed throughout north and south of China. In addition to harming pears, but also for the harm of apples, hawthorn. Most of the region 1 generation, a few 2 years 1 generation.……

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Fruit

Knowledge Title: Fruit Other Title: fruit Knowledge Content:  The reproductive organs unique to the quilt plant. Developed by a mature sub-house or adjacent part. Seeds are included. Many fruits are an important source of human food and can also be used for medicinal and industrial raw materials.  Formation and structure The quilt plant, through flowering, pollination and fertilization, when the embryo beads develop into seeds, can produce hormones that promote the rapid growth of the sub-wall, forming the peel. This purely developed fruit from the sub-house is called the real fruit, its structure is relatively simple, the outer peel, contains seeds. The peel is usually divided into three layers of outer peel, middle peel and inner peel (Figure 1). The color, structure and degree of development of the peel vary according to plant species. The outer peel sometimes refers to the epidermis or epidermis and certain adjacent tissues, often with pores, horns, wax quilts, skin, etc.……

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Temperate fruit trees

Knowledge Title: Temperate fruit trees Other Title: temperate fruit tree Knowledge Content:  A fruit tree that is adapted to grow in temperate climate conditions. Mainly distributed in the north latitude or south latitude between 30 to 60 degrees, the vast majority of deciduous fruit trees. Including: nuts, such as apples, pears, hawthorns, dates, etc. ; nuclear fruits, such as peaches, apricots, plums, plums, cherries, etc.; berries, such as grapes, persimmons, kiwis, strawberries, raspberries, cranberries, currants, etc.; nuts, such as walnuts, chestnuts, hazelnuts, ginkgo, pecans, a merinsts, etc. Temperate fruit trees play an important role in the production of fruit trees in the world. Apples, pears, persimmons, dates and so on account for about three-quarters of China's total fruit production.  Temperate fruit trees are not resistant to cold, but compared with tropical and subtropical fruit trees, the growth season heat requirements are low, winter cold resistance is strong, and natural sleep characteristics, require a certain period of low temperature, to complete sleep, normal growth and flowering strong.……

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