在大棚内培育松树、云杉和落叶松的播种苗,采用由新鲜的高位泥炭和多种化肥的混合物是一种较好的培养基。实际上各地区都是利用高位和中位泥炭作为主要的培养基,其特点是具有高的吸水性和孔隙度、良好的透气透水性、很少混进杂草籽、无病菌。在温室内培育播种苗可以利用低位的沼 Cultivating seedlings of pine, spruce and larch in greenhouses is a good medium with a mixture of fresh peat and various fertilizers. In fact, all regions use high and medium peat as the main medium, which is characterized by high water absorption and porosity, good permeability to water and water, and little mixing of weed seeds and germs. Sowing seedlings in the greenhouse can make use of low marsh