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《Geographical Research》 2018-09
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The empirical determination on appropriate management scale of cultivated land in mountainous areas: A case study of Chongqing

FAN Qiaoxi;SHAO Jing'an;YING Shouying;Chengdu University of Information Technology, School of Statistics;College of Geography and Tourism, Chongqing Normal University;Key Laboratory of Surface Process and Environment Remote Sensing in the Three Gorges Reservoir Area;  
In the context of the state allowing the transfer of rural contracted management rights and the development of modern agriculture, what scale is appropriate in the mountain area, and which is characteristic of the ups and downs of the topography, the fragmentation of the land and the far radius of the distribution? This is one of the scientific problems that must be clarified at the moment. Using 480 valid questionnaires, with the investment of agricultural labor force as the calculating unit, and with per labor net income as the evaluation index, we constructed econometric model from two aspects of crop type and radius of plot distribution.The results showed that:(1) In the current social and economic conditions, the area of moderate scale management of agricultural land is 24-32 mu. Per labor net income is far higher than the current rural per capita net income at moderate scale, and the gap between the urban and rural residents has significantly reduced.(2) The type of crops has little influence on the moderate scale, but it has a great influence on the net income of farmers. The moderate scale of economic crops and grain crops were 24.33 mu and 24.63 mu, respectively, but the difference was not significant. Per labor net income gap is 3638 yuan by planting economic crops and grain crops at moderate scale. The huge gap will prompt the development of economic crops in some areas suitable for economic crops.(3) The distance has great influence on the land moderate scale,but has little effect on the per labor net income. The areas within the distance of 0.5 km and 0.5-1 km at moderate scale were 28.62 mu and 31.83 mu, respectively, and the gap between moderate scales of average labor is 3 mu. This shows that distance is an important factor in agricultural production. However, the gap between per labor net income is small, which illustrates that the expansion of the moderate scale is mainly attributed to machinery with the increase of working distance. The model of land outside of 1 km fails to pass statistical test,which is further confirmed. Therefore, large-scale operation and mechanized farming are effective ways to solve the problem of distance;(4) Moderate scales of land are feasible and the feasibility and necessity for promoting the moderate scale of land management are demonstrated. This will provide scientific reference for the government to formulate the rural land management policy.
【Fund】: 国家基金委重大国际合作项目(41161140352);; 国家社会科学基金西部项目(18XSH008);; 四川省软科学研究计划项目(2017ZR0163);; 四川省社会科学“十三五”规划2016年度项目(SC16B020);; 国家统计局统计信息技术与数据挖掘重点开放实验室开放课题(SDL201508 SDL201709)
【CateGory Index】: F323.211
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