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收集宁德地区5个县（市）16个飞播造林播区729个样地的资料,采用数量化理论Ⅰ的方法进行马尾松飞播造林成效和苗高生长的研究,设8个项目,每一项目划分2～4个类目,应用ACRO-386微机求解参数,得预测方程。经计算复相关系数及F检验、方差比、项目得分范围、偏相关系数及t检验,预测方程的回报精度表明线性回归关系极端显著,回报精度高,所建立的预测方程有实际意义;影响飞播造林成效和苗高生长的主要立地因子为植被盖度（以0.3～0.7为好）、海拔高（以250～800m为好）、坡向（以半阳坡、半阴坡为好）。
The data of 729 plots in 16 sown areas of afforestation in 5 counties (cities) of Ningde were collected and the results of air seeding afforestation and seedling height growth of Pinus massoniana were studied by quantitative theory Ⅰ. There were 8 projects, Divided into 2 to 4 categories, the application of ACRO-386 computer parameters to obtain the prediction equation. After calculating the complex correlation coefficient and F test, variance ratio, project score range, partial correlation coefficient and t-test, the prediction accuracy of the regression equation shows that the linear regression relationship is extremely significant and the return accuracy is high. The prediction equation established has practical significance; The main site factors for afforestation effectiveness and seedling height growth are vegetation coverage (0.3-0.7), high altitude (250-800 m is good), and slope direction (semi-sunny and semi-shady).