population migration Learn more about population migration
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The Law of population Migration in the process of Modernization
The so-called immigration law (law) or population migration law is the researcher's summary and refinement of the regular phenomena, trends and problems shown in a large number of population migration movements. it is an important group in population research and population migration theory research.
2016-03-20 Modernization process ongoing population migration laws the so-called immigration -
The changes of Peasant families in China under the influence of population Migration
The changes of Peasant families in China under the influence of population Migration
2019-02-18 -
Pay attention to the cost of rural migration
Pay attention to the cost of rural migration
2019-02-19 -
New challenges and New opportunities to see the New urbanization from the Spring Festival Transportation big data
Spring Festival transportation is a unique social phenomenon in the process of urbanization in China, and it is also one of the manifestations of the serious imbalance between the eastern and western regions of China's economic development. It is easier said than done from the perspective of Baidu's migration to big data, taking 17:00 on the 25th (the seventh day of the first lunar month) as an example, moving into the hottest city.
2016-03-20 New challenges new challenges new opportunities opportunities from Spring Festival travel big data -
The symbol of urbanization in the tide of Spring Festival transportation
Before and after the Spring Festival, the large-scale Spring Festival travel tide began again. This scene not only presents the rapid transformation of "vernacular China", but also contains the profound background of national urbanization. If we understand the symbols of urbanization shown in the Spring Festival travel tide, we can better understand the back of economic growth.
2016-03-20 Spring Festival transportation tide medium urbanization symbol Spring Festival before and after large-scale -
When did the Tibetan antelope migrate on a large scale? How long will it last? Why migrate?
Tibetan antelope are animals that live in alpine grasslands and alpine desert areas. they are good at running and migrating. When did the Tibetan antelope migrate on a large scale? How long will it last? Why migrate? When will the Tibetan antelope migrate on a large scale? Every
2020-11-11 Tibetan antelope large-scale migration yes when lasting how long -
Distribution of producing area of eel
Distribution of producing area of eel
2018-09-08 -
Five suggestions on promoting Family urbanization
The urbanization of China is different from the family-led population migration in other market economy countries, but the migrant workers work in the city and integrate into the city. Although a large number of rural population entering the city is statistically recognized as the urban population, but the society is "taking" the rural population.
2016-03-20 Promotion family urbanization five points suggestions China -
What are the characteristics of black locust aphid? What is the method of prevention and control?
Robinia pseudoacacia aphid harms many kinds of legumes, such as Robinia pseudoacacia, locust tree, Amorpha fruticosa and so on. As an adult. The new shoots of Robinia pseudoacacia are clustered by nymphs to suck sap, which causes the new shoots to bend, the young leaves curl, the branches can not grow, and its secretions often cause coal fouling disease. The wingless aphid is about 2 mm long, oval, black and glossy, with obvious hexagonal reticulation on the back of the head, chest and abdominal segments 1-6; horizontal striations on the abdominal segments 7 and 8; winged aphids, long ovoid, black and smooth, wings gray-white, transparent. Robinia pseudoacacia aphids occur for more than 20 generations a year. Mainly with
2019-01-15 -
How to welcome the arrival of the "era of family mobility"?
How to welcome the arrival of the "era of family mobility"?
2019-02-18 -
What level of national protected animals is the Tibetan antelope "plateau spirit"? How many are there? Why migrate?
Tibetan antelope, the scientific name Tibetan antelope, is Artiodactyla, Bovidae, Tibetan antelope animals. Inhabit alpine grasslands, meadows and alpine deserts at 3700-5500 meters above sea level, foraging in the morning and evening, and good at running. As a typical representative of the fauna of the Qinghai-Tibet Plateau, the Tibetan antelope is difficult to measure.
2020-11-11 "Plateau elves " Tibetan antelope yes the country several levels protection -
Rural experience / migration of junior college students _ agricultural stay
Rural experience / migration of junior college students _ agricultural stay
2018-02-23 -
Life revelation of Rural areas and Youth in South China / Migration of Junior College students _ Agricultural stay
Life revelation of Rural areas and Youth in South China / Migration of Junior College students _ Agricultural stay
2018-02-23 -
Rice white-backed planthopper
Host rice, English white, corn, barley, wheat, sugarcane, sorghum, barnyard grass, Kentucky bluegrass and so on. The damage characteristics are the same as those of brown planthopper. Morphological characteristics the long-winged male is 3. 2-3.8mm long, light yellow with black and brown spots. Protrusion of the top of the head, forechest, middle chest dorsal plate lateral ridge external compound eye with 1 crescent dark brown spot, middle chest dorsal plate side area dark brown, middle yellow longitudinal band, front wing translucent, end brown halo spot; wing disease, face, chest, abdomen ventral dark brown. The long-winged female has a body length of 4mur4.
2019-01-16 -
Control measures of soybean aphid disease
Soybean aphid is one of the main pests of soybean. Adults and nymphs are used to suck juice on the top leaves, tender leaves and stems of soybean plants. In severe cases, it is covered with stems and leaves, which can also infringe upon tender pods, resulting in dwarfism of plants, reduction of fruiting branches and pods, decrease of 1000-grain weight, and death of the whole plant at seedling stage. If it is not controlled in time in the big year, the yield will be reduced by 20-30%. If it is heavy, the yield will be reduced by more than 50%. The main soybean producing areas in China are all distributed, while the harm is more serious in some areas of Northeast China, Henan, Shandong and other provinces. Big
2019-01-16 -
How to control rice white-backed planthopper
The scientific name Sogatellafurcifera (Horv6th) belongs to Homoptera, Homoptera. It is distributed in Yingbai and rice growing areas of China. Host rice, English white, corn, barley, wheat, sugarcane, sorghum, barnyard grass, Kentucky bluegrass and so on. The damage characteristics are the same as those of brown planthopper. Morphological characteristics the long-winged male is 3. 2-3.8mm long, light yellow with black and brown spots. Protrusion of the top of the head, forechest and middle thoracic dorsal plate lateral ridge with 1 crescent dark brown spot behind the compound eye, black and brown in the lateral area of the middle thoracic dorsal plate.
2019-01-16 -
Wart breast glass ant disaster expanded nine counties and cities, there is a trend of northward migration! Council of Agriculture Environmental Protection Department plans long-term Anti-Japanese measures
Wart breast glass ant disaster expanded nine counties and cities, there is a trend of northward migration! Council of Agriculture Environmental Protection Department plans long-term Anti-Japanese measures
2019-10-08 -
Video of Tibetan Xiang Pig breeding Technology
Video of Tibetan Xiang Pig breeding Technology
2018-07-06 -
How to raise pond heron
Pond heron is a very beautiful wild bird, often living in rice fields, ponds, swamps and other places, because of its beautiful appearance, many people will want to know, how to raise pond herons? The pond heron is a typical wading bird with a length of about 47 centimeters and white wings.
2020-11-11 Pond heron how raise pond heron is a kind of very floating bright -
Introduction and control of citrus planthopper
Citrus planthopper [Diaphorinacitrikuwayama] belongs to Homoptera, Caryophyllaceae. It is an important pest in the tender shoot stage of citrus, which mainly harms citrus, as well as Rutaceae plants such as Jiuli incense and yellow bark. caused damage by sucking juice on young shoots, young leaves and new buds of adults and nymphs. The young shoots of the victims.
2018-09-15