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卵石丘陵区气候干旱,表土瘠薄,卵石层较厚,造林难度较大。建国以来,绿化丘陵荒岗取得了一定成绩。但是,由于对丘陵区的立地条件、造林树种、整地方式缺乏调查研究,不能做到适地适树。因而,长期以来,不少地方造林成活率低、林木生长不良,形成“小老树”,成林不成材。为了解决这个问题,我们在丘陵区设立了69个调查地点,对其立地条件、造林整地、林木生长表现及自然植被进行了调查研究。经过对比分析,初步提出适合该区的造林树种,整地方式、绿化途径和经营措施。
Pebble hilly climate arid, barren surface soil, thick pebble layer, afforestation more difficult. Since the founding of the People's Republic, some achievements have been made in the wasteland of greening hills. However, due to the lack of investigation and study of site conditions, afforestation species and site preparation methods in the hilly areas, it is not possible to properly adapt to tree species. Therefore, in many places, the survival rate of afforestation in many places is low and the trees grow poorly so that the “small old tree” is formed and the forest is in a poor condition. In order to solve this problem, we set up 69 survey sites in the hilly areas to investigate the site conditions, afforestation, tree growth performance and natural vegetation. After comparative analysis, initially proposed suitable for the area of afforestation species, site preparation methods, green ways and management measures.