论文部分内容阅读
河北省乐亭县中保王庄乡，土地肥沃，水利灌溉条件优越，是全国闻名的土豆生产基地。为了充分利用当地资源，解决人多地少，粮菜争地的矛盾，提高单位面积产量和经济效益，从1997年开始，在土豆、玉米间作一年两熟的基础上，探索土豆、玉米和菜花一年三种三收间作套种高产高效
Leting County, Hebei Province, Wang Baozhong, fertile land, irrigation and irrigation conditions are superior, is the famous potatoes production base. In order to make full use of local resources, solve the contradiction between people and land and land for food and vegetables, and improve yield per unit area and economic benefits, from 1997 onwards, potatoes, corn and corn Three kinds of cauliflower three intercropping intercropping high yield and high efficiency