我们做过的施肥试验资料表明:在采种区和种子园里,欧洲赤松球果的结实量表现出很大的个体变异特征,而树木结实量的分布与标准木有很大差异。遗传特性、环境、群落结构等很多因素都影响单株树木的收获量。采种区收获量的大小在很大程度上取决 The fertilization experiments we have done show that in the seed collection area and the seed orchard, the seed yield of Pinus vacata shows a great individual variation, while the distribution of tree stout is very different from that of standard wood. Many factors, such as genetic characteristics, environment, community structure, affect the harvest of individual trees. The size of the harvesting area depends to a large extent