Research On The Introduction And Spread Of American Crops And Its Influence In Wuling Region

During the Ming and qing dynasties,more than 30 kinds of American crops,such as corn,sweet potato,potato,pepper and tobacco,were introduced into China,and then they were introduced to wuling area and then planted widely.The introduction and extension of American crops have a profound impact on the agricultural structure,population growth,social economy,ecological environment and many other aspects in wuling area.This paper mainly includes four parts.The first chapter mainly summarizes the natural and human environment and agricultural history of wuling area before the land conversion in qing dynasty.After the bureaucratization of native officers,agricultural industry developed rapidly and became the main mode of production in the economic life of this region.In the second chapter,the introduction and popularization of main American crops in wuling area are mainly divided into three types:first food crops,including corn,sweet potato and potato;Second,cash crops include tobacco and peanuts;Third,vegetable crops include peppers and pumpkins.The third chapter summarizes and summarizes the reasons for the introduction and promotion of American crops in wuling area.First,natural factors,the wuling mountain area natural conditions suitable for American crops.especially the growth of the crops such as maize sweet potato and potato followed by social factors,on the one hand,the qing dynasty after the gai-tu-gui-liu policy,to scrap the prefectural officials across strongly advised,accelerated the speed of America crops,on the other hand,the gai-tu-gui-liu policy after a large number of floating population into wuling area,advanced agricultural science and technology in the central plains subsequently introduced into this area,for the introduction promotion of America crops laid a solid technical foundation.In addition,the population explosion led to increasingly acute conflicts between people and land,prompting the rapid spread of American crops,especially corn and other food crops.The fourth chapter mainly analyzes the historical influence of the introduction of American crops to wuling region.Specifically,first of all,provides the new crop varieties of agricultural production,change the crop structure,expanded the area of cultivated land at the same time,greatly increase the area of food production.And second,to promote their industrial and commercial development,active the rural economy,increase the income of the farmers,to speed up the social and economic development in the region.Multiple times,as population growth laid a solid material foundation,moreover,changed people’s diet structure,and derived a series of folk cultural activities,enrich the cultural life of the people.In the end,to a certain extent changed the wuling region ecological environment,the vegetation destruction animal destroy the ecological environment problems such as soil fertility decline in soil and water loss.