论文部分内容阅读
马尾松生长迅速、耐瘠薄,是我省低山丘陵、黄土岗地的主要造林树种。建国后营造面积达512万亩,占全省造林总面积的47.5%,为杉木造林面积的1.6倍。这些马尾松人工林现多属中、近熟林,且分布极广,林地立地条件差别较大。为探讨在不同立地条件下,根据经营目的确定的适宜间伐技术,我们对我省的马尾松人工林进行了调查研究。
Masson pine growing rapidly, resistance to infertility, is the province of hilly, loess hillock of the main afforestation species. After the founding of the PRC, an area of 512 mu was established, accounting for 47.5% of the total afforestation area in the province and 1.6 times of afforestation area of Chinese fir. These Pinus massoniana plantations are mostly in the middle and near mature forests, and the distribution is extremely wide, large differences in site conditions of woodland. In order to explore suitable thinning techniques according to the purpose of management under different site conditions, we conducted a survey on the Pinus massoniana plantations in our province.