摘要
This study examines the technical efficiency(TE) differences among typical cropping systems of smallholder farmers in the purple-soiled hilly region of southwestern China.Household-,plot-,and crop-level data and community surveys were conducted to explore TE levels and determinants of typical cropping systems by using a translog stochastic frontier production function.Results indicate significant difference in TE and its determinants among cropping systems.The mean TEs of the rice cropping system(R),the rice-rape cropping system(RR),the rice-rape-potato cropping system(RRP),and the oil cropping system(O) are0.86,0.90,0.84,and 0.85,respectively,which are over 1.17 times higher than those of the maize-sweet potato-other crop cropping system(MSO) and the maize-sweet potato-wheat cropping system(MSW) at0.78 and 0.69,respectively.Moreover,Technical inefficiency(TIE) of different cropping systems is significantly affected by characteristics of the household as well as plot.However,the impact of land quality,mechanical cultivation conditions,crop structure,farming system,farm radius,household type,cultivated land area per capita,and annual household income per capitalon TIE vary by cropping system.Additionally,output elasticity of land,labor,and capital,as a group,is greater than the one of agricultural machinery and irrigation.Finally,when household-owned effective agricultural labor is at full farming capacity,optimal plot sizes for the R,RR,RRP,MSO,MSW,and 0 cropping systems are 1.12hm^2,0.35 hm^2,0.25 hm^2,2.82 hm^2,1.87 hm^2,and 1.17hm^2,respectively.
作者
ZHANG Shi-chao
WEI Chao-fu
SHAO Jing-an
WU Zhao-juan
ZHANG Shi-chao;WEI Chao-fu;SHAO Jing-an;WU Zhao-juan(Key Laboratory of Surface Process and Environment Remote Sensing in the Three Gorges Reservoir Area, College of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China;Key Laboratory of Arable Land Conservation (Southwest China), Ministry of Agriculture, College of Resources and Environment, Southwest University, Chongqing 400715, China;Academy of Agricultural Sciences, Chongqing 401329, China)
基金
the support of the National Natural Science Foundation of China (Grant No.41501104)
the National Key Technology R&D Program of China (Grant Nos.2013BAJ11B02,2013BAJ11B02-03)
the Basic and Frontier Research Project of Chongqing Science &Technology Commission (Grant No.cstc2015jcyj A80025)
the Science and technology research project of Chongqing Education Committee (Grant No.KJ1500336)
