试验采用4因素3水平正交试验设计。结果表明,在本试验地条件下,影响油松播种苗生长的主要措施是施磷和混沙,最佳配比方案为磷肥92克/米~2混沙25千克/米~2。在这种条件下,有利菌根生长,苗木各项生长指标均达到较高水平,Ⅰ、Ⅱ级优质苗产量可达总苗量的80％以上。 The experiment adopted 4 factors and 3 levels orthogonal experimental design. The results showed that the main measures affecting the growth of Pinus tabulaeformis seedlings were Phosphorus and mixed sand under the conditions of the experimental site. The optimal ratio was 92 kg / m ~ 2 of phosphate fertilizer 25 kg / m ~ 2. Under these conditions, mycorrhizal growth and the growth indexes of seedlings all reached a higher level. The yield of high quality seedlings of grade Ⅰ and Ⅱ reached more than 80% of the total seedlings.