山东五莲县千里镇小尧村由于砖厂烧砖取土形成2米多深的废弃窑坑，使一些土地变成不毛之地。村民营思玉灵机一动：搞个地下栩试种O1992年起，他进废窑坑一角，建0．6亩的塑料大棚，将土地深校1来后压上O．5朱厚的水库淤泥改良土壤，神上蔬菜。由于大棚建在窑坑里，冬天保温好， Xiaoyao Village, Qianli Town, Wulian County, Shandong Province As a result of brick-making, the brick kiln takes the soil to form an abandoned kiln pit of more than 2 meters deep so that some of the land becomes barren land. Villager camp Sima jinglei move: engage in underground Xu test species O1992 onwards, he entered the kiln pit corners, build 0.6 acres of plastic shed, the land deep school 1 to pressure O. 5 Zhu thick reservoir silt to improve the soil, the god of vegetables. As the shed built in the kiln pit, good winter insulation,