目前我省红松育苗有两种方法,即平地育苗和山地育苗。为提高平地老苗圃红松苗木的产量和质量,于1983—1987年在本所苗圃进行了土壤改良育苗技术试验。试验结果表明,经土壤改良后培育出的红松苗,市产合格苗14万株,是原平地老苗圃产量的326％,是山地苗圃的77％。每千株成本5.90元,每亩纯利润高于老苗圃 At present, there are two ways to grow Korean pine seedlings, that is, raising seedlings and breeding seedlings in the mountains. In order to improve the yield and quality of Pinus sylvestris seedlings in the old nursery of Pingdi area, a soil improvement and seedling raising experiment was conducted in our nursery from 1983 to 1987. The results showed that the Korean pine seedlings raised after soil improvement produced 140,000 qualified seedlings, accounting for 326% of the original nursery stock and 77% of the mountain nursery. 5.90 yuan per thousand plant costs, net profit per mu higher than the old nursery