It indicates that it is the best for the growth of seedlings to use three kinds of nutrient media: turfy soil+humus soil, humus soil+horse muck, turfy soil+horse muck.

• 结果表明：用草炭土+腐殖土、腐殖土+马粪、草炭土+马粪配制的三种营养基质，最有利于红松幼苗的生杜；