| China is a large agricultural country is also a large population, food production is related to the colossal task, Rice is one of China’s consumption of major food categories, the double cropping of rice production and rice production, the most important concern the double cropping of rice production is of great significance. With the continuous development of Chinese society and economy, the double cropping of rice production environment changes, the layout of the double cropping of rice production space also quietly changed to study the characteristics and causes of the main producing areas of China’s double rice cropping space layout changes, and Based on the analysis results, some policy recommendations on how to ensure the stable development of double cropping of rice production.Through the reading of the literature study and theoretical analysis, that the double cropping of rice production space layout changes are the result of a combination of factors, and put forward the hypothesis:the double cropping of rice production space changes the natural conditions, socio-economic environment, the double cropping of rice cultivation technology, space interaction results of the effects of four broad categories of factors working together. Factor is the natural conditions of the affected area, the per capita arable land, double cropping of rice irrigated area; socio-economic factors to the double cropping of rice fertilizer application rate per unit area of Machinery and transport network density, the comparative effectiveness of non-agricultural employment opportunities, policies, etc.; double cropping of rice cultivation technology is used in double cropping paddy production processes, production technology; space interaction effect refers to the interaction between the adjacent region of rice production. The use of traditional statistical description and geographic information system analyzes the characteristics of the double cropping rice in the main producing areas of space layout changes. The results show that the total acreage of the double cropping of rice of the country in the past30years showing an overall decreasing trend; double cropping of rice yields in a gradual increase in late rice yields increased production to be higher than that of early rice; National double cropping of rice output emerged four stages of change:(1980-1984)-remained stable (1985-1994)-decline (1995-2003)-to maintain a smooth (2005-2008), the total output due to double cropping of rice planting area is substantially reduced and the cut. Hainan, Guangxi, Jiangxi, Hunan Province, double cropping of rice concentration rose, Zhejiang Province, Anhui double cropping of rice concentration index downward trend, Zhejiang Province decline. In the double cropping of rice cultivation to the country’s total crop production, rice production in the decreased proportion of the conditions, which Hainan, Guangxi, Jiangxi, Hunan, double cropping of rice cultivation with a high concentration, has certain comparative advantages in the production of food crops. Found through the correlation analysis of the space between the double cropping of rice production provinces, each double cropping of rice is the main producing areas of double cropping of rice production by the completely random state agglomeration characteristics change from region to region, Hunan, Guangdong Province, Guangxi Province, the three provinces double cropping of rice producing areas showing a higher regional agglomeration characteristics of the overall space a positive correlation between the provinces.Chapter IV of this paper to Jiangxi Province for the class, the first analysis on the spatial distribution characteristics of the double cropping of rice production in Jiangxi Province, cities and double cropping rice area, yield basically the same movements trend showing double cropping of rice planting area in1980and1990relatively stable in the double cropping of rice acreage overall decline from1990to2003, decline; after2003, the double cropping of rice acreage rebounded sharply. Jiangxi double cropping of rice yield variation with the double cropping of rice yields change features. No obvious regional differentiation of double cropping of rice production in the province, most of the regional double cropping of rice production to maintain the original distribution of the proportion of The proportion of the city of Jingdezhen, Jiujiang City, Pingxiang City, nearly30years of double cropping of rice planting area accounts for the province double cropping of rice planting area in Jiangxi Province in reducing the proportion of Nanchang, Xinyu, Yichun City, double cropping of rice planting area is increasing. City domain level, the establishment of spatial econometric spatial panel (Panel Data) model analyzes the causes of the double cropping rice in the spatial variation of Jiangxi Province,11cities (prefectures); the way of a questionnaire on the county level, the use of two the yuan Logistic Model factors the double cropping of rice cultivation will affect farmers planting; analysis of comprehensive two models, more complex factors affecting the change of the double cropping of rice planting space is the result of a combination of factors, the most important factor reflected in the policy factors and economic factors.Summary of the full text of Chapter discussion and analysis of recognition to ensure double cropping of rice production is to increase food production to ensure national food security a major move to increase the acreage, increase yield per unit area is the main way of the stable development of double cropping of rice production. A strong impetus to the double cropping of rice production in China, national policies should be strengthened to support increased double cropping of rice production areas, advantages of farmland building efforts, and efforts to improve the double cropping of rice production and economic efficiency, optimizing the double cropping of rice production environment... |
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