我场在一九六四年六月引种了一些加勒比松,这种松树具有生长迅速(为马尾松生长量的两倍)、干形通直、侧枝小,对病虫风害抗性强、适生性广等优点。但加勒比松种源缺乏,不能适应大面种发展造林的需要。我们针对存在的问题学习了毛主席的光辉哲学著作《实践论》,以毛主席的哲学思想为武器,打破洋框框,除采用嫁接的方法扩大种源外,并采用了移植办法。于一九七一年五月对加勒比松幼树(平均胸径5厘米,树高5.5米)进行带土移植4株,在试验成功的基础上,再进行带土移植66株,共70株, In June 1964, we introduced some Caribbean pine, which has a rapid growth (double the growth of Pinus massoniana), dry and straight, small collateral, strong pest resistance to wind and insect pests, Broad compatibility advantages. However, the lack of Caribbean pine species can not meet the needs of large-scale development of afforestation. In response to the existing problems, we have studied Chairman Mao’s glorious philosophical book Practical Theory, taking Chairman Mao’s philosophical thinking as a weapon and breaking the yang-framed box. In addition to using grafting methods to expand sources of provenance, we have adopted a transplant approach. In May 1971, 4 young plants (4 cm in diameter at the breast diameter and 5.5 m in height) were planted with soil grafted on the young pine trees of Siberian pine. On the basis of the successful experiments, 66 plants with soil transplants, 70 in total,