近年来．滦县示范推广适合当地种植的粮粮、粮菜、粮油、粮烟、粮瓜型等五大“双子工程”模式50万亩，获得了可观的经济效益，有力地促进了经济发展．受到了领导和群众的赞扬，其具体内容是：一、粮粮型种植携式即小麦──玉米──小豆一体化栽培模式。小麦选用丰抗八．京东六 In recent years. Luanxian demonstrated and popularized 500,000 mu of five “Gemini Project” models of grain, grain, grain and oil, grain and tobacco, grain and melon, etc. which were suitable for cultivation in the local area and gained considerable economic benefits and effectively promoted economic development. By the leaders and the masses praised, the specific content is: First, the grain-based planting portable wheat ─ ─ corn ─ ─ bean integrated cultivation model. Feng selection of wheat eight. Jingdong VI