长春地区位于我国东北的中部平原地带,是吉林省的主要粮食产区。从自然条件来看,平原占50%,丘陵占40%,山地占10%。地形复杂,土壤类型较多。其中有相当数量的瘠薄农田,单位面积产量很低,是农作物产量跨《纲要》的主要障碍。长春地区共有低产土壤365000垧(一垧等于一公顷即15市亩),主要是:黄土、鳅粘土、盐硷土、砂石土和白浆土,占全区总耕地面积33%。各类低产土壤如能因地制宜地采取相 Changchun area is located in the central plains of northeast China, is the main grain producing area in Jilin Province. From the natural conditions, the plains accounted for 50%, 40% hills, mountains accounted for 10%. Terrain complex, soil types more. There are a considerable number of barren farmlands with low yield per unit area, which is a major obstacle to the cross-platform implementation of crop production. The total yield of low-yielding soil in Changchun is 365,000 一 (one 垧 equals one hectare or 15 municipalities), mainly including loess, loach clay, saline-alkali soil, gravelly soil and albic soil, accounting for 33% of the total cultivated land in the region. Various types of low-yielding soil can be taken if appropriate