中文摘要：

定量测度资源强约束区耕地适度集约利用程度对于区域的可持续发展具有重要意义。文中构建了耕地适度集约利用理论框架,运用乌兰察布市194户普通农户及45户种植大户的调研数据及区域统计数据进行了实证分析。主要得到以下结论：1）耕地适度集约是指在区域资源约束条件下,边际成本等于边际产出时的集约边际。2）仅考虑利润最大化的情况下,单位耕地面积水资源适度投入为7584.99m3/hm~2,单位耕地面积物质适度投入为5394.5元/hm~2,家庭适度经营规模为10.95hm~2。3）在水资源约束下,单位耕地面积水资源适度投入为3980.03m3/hm~2,单位耕地面积物质投入为3897.64元/hm~2,家庭适度经营规模为22.84hm~2,目前种植大户已经过度集约利用,水浇地普通农户水资源及物质投入最接近适度值。在耕地可持续发展的要求下,可以适度扩展水浇地普通农户的经营规模,而控制种植大户的发展速度及规模。

英文摘要：

Quantitatively measuring of moderate intensification is of great significance for sustainable utilization of resources. Based on the survey data of 194 ordinary farmers and 45 famers with larger area of land, we built a theoretical framework of cultivated land moderate intensification and made an empirical analysis. This article gets the following conclusion： （1） moderate intensification refers to the marginal cost is equal to the marginal output of intensive marginal under the resource constraints. （2） Under the condition of only the profit maximization, moderately water resources investment per land is 7584.99m^3/hm^2, moderately material investment per land is 5394.5 Yuan/hm^2, family appropriate scale is 10.95 hm^2. （3） Under the water resource constraints, moderately water resources investment per land is 3980.03m^3/hm^2, moderately material investment per land is 3897.64 Yuan/hm^2, family appropriate scale is 22.84 hm^2 , scale famers are using resources excessively. At the request of the cultivated land sustainable development, we should control the speed and size of the scale famers＇ development.