论文部分内容阅读
黑松(Pinnus thunbergit Parl)亦称日本黑松,生长快,抗海风,耐海雾,耐干旱瘠薄,对于恶劣气候抗性较强,具有防风固沙、保持水土的效能,是我国暖温带沙质海岸及滨海低山丘陵的主要造林树种。在以往调查中发现,黑松林分中个别单株生长较快,树干?
Pinus thunbergit Parl also known as Japanese black pine, fast growth, resistance to sea breeze, sea fog, drought barren, strong resistance to bad weather, with wind and sand, soil and water conservation, is China’s warm temperate sandy Coastal and coastal hills in the main afforestation species. In the previous survey found that individual individual black pine forest growth faster, the trunk?