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１ 前 言 马铃薯是陕北黄土高原丘陵沟壑区粮菜兼用型作物，其收获好坏对当地人民生活影响很大。延安市常年种植马铃薯面积达５万多ｈｍ~２，近年来已新建立许多马铃薯生产基地，取得了明显的经济效益和社会效益。为了探索简便有效的栽培增产措施，我们进行了马铃薯多元微肥浸
1 Introduction Potato is a dual-use crop with both vegetables and vegetables in the hilly and gully regions of the Loess Plateau in northern Shaanxi. The quality of its harvest has a great impact on the local people’s livelihood. Yan’an City, the annual planting of potato area of more than 50000 hm ~ 2, in recent years many new potato production base has been established, and achieved significant economic and social benefits. In order to explore the simple and effective cultivation and stimulation measures, we carried out a variety of potato micro-fertilizer leaching