由于有些马尾松林的质量欠优,因而经济价值偏低,加上树种单一,对立地的改良作用及对病虫害的抵抗能力均不如混交林。因此,将一些马尾松林改造成经济价值和生态效益较高的针阔叶混交林,具有一定意义。在马尾松林混栽其它树种,为改造马尾松林的方法之一,而混栽树种的选择则是改造成败的关键。我们自60年代初开始了这方面的试 Due to the poor quality of some Pinus massoniana forests, the low economic value, together with the single tree species, the improvement effect on the opposite sites and the resistance to pests and diseases are not as good as mixed forests. Therefore, the transformation of some Pinus massoniana forest into a coniferous and broad-leaved mixed forest with high economic value and high ecological benefit has certain significance. Mixed planting of other tree species in the Pinus massoniana forest is one of the ways to transform the Pinus massoniana forest. However, the choice of mixed tree species is the key to the success or failure of the transformation. We have experimented in this area since the early 1960s