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我国黑松海防林大部分是５０年代末和６０年代初营造的，沿海岸线是带状分布，主要分布于辽宁半岛、山东半岛、江苏云台山等地。为了正确评价黑松林分质量，选择优良林分，我们开展了黑松林分球果、种子性状变异及苗期试验。内容报道如下。１ 材料与方法１．１ 对采种黑松林
Most of the Pinus thunbergii forest in China was built in the late 1950s and early 1960s. The coastline is zonal distribution, mainly distributed in Liaoning Peninsula, Shandong Peninsula, Yuntaishan, Jiangsu and other places. In order to correctly evaluate the quality of the Pinus thunbergii forest and choose the good stands, we conducted the Pinus thunbergii Pinus tabulaeformis, the seed traits variation and the seedling stage. The content is reported as follows. 1 Materials and methods 1.1 on the black pine forest