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论文以青藏高原东部大渡河上游农牧交错区为例,采用农户问卷调查方法,在2006和2011年进行的农户和地块调查基础上,分析了研究区种植制度\\\"双改单\\\"现象,并运用多元线性回归模型探究影响种植制度\\\"双改单\\\"变化的因素。研究表明:1在2006—2011年间,研究区玉米的播种面积保持稳定,小麦的播种面积大幅度下降,土豆的播种面积快速上升,经济作物的播种面积缓慢增加;复种指数明显降低,两熟制作物种植面积下降,一熟制作物种植面积增加,\\\"双改单\\\"现象明显。2非农收入变化、畜牧业收入变化、地块均面积和区位变量是影响种植制度\\\"双改单\\\"的主要原因。研究种植制度变化并揭示其影响因素,有利于为政府制定有的放矢的粮食生产激励政策提供依据。
Taking the farming and animal husbandry ecotone in the upper reaches of the Dadu River in the east of Qinghai-Tibet Plateau as an example, this paper analyzes the peasant household and plots survey conducted in 2006 and 2011 based on the questionnaire survey of farmers, , And use multivariate linear regression model to explore the factors that affect the planting system \\ \"double change single \\\" changes. The results showed that: 1 During the period of 2006-2011, the sown area of maize remained stable in the study area, the sown area of wheat dropped sharply, the sown area of potato increased rapidly, the sown area of cash crops increased slowly, the multiple crop index decreased significantly, Planting area decreased, crop acreage increased, \\ \"double change single \\\" phenomenon is obvious. 2 The change of non-farm income, the change of livestock husbandry income, the area of land parcel and the location variables are the main reasons that affect the planting system \\ \"double change single \\\". Studying the change of cropping system and revealing the influencing factors will be helpful to provide the basis for the government to set the targeted grain production incentive policy.