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云,冷杉在我有主要分布在中甸、丽江等高寒地区,为滇西北高山林区暗针叶林的主要组成树种,采伐后迹地更新虽经多年研究和实践,但仍有一定难度。而法国在采伐迹地,火烧迹地或荒山等宜林地上进行云、冷杉植苗更新造林,在苗木规格质量,苗木搬运和假植,造林密度,造林方法等技术方面都有其特点,有的经验我们可以借鉴,有利于提高我省云、冷杉更新造林质量。现将法国云、冷杉植苗更新造林的主要技术简介如下: ①采用大苗壮苗更新造林。对用于上山更新造林的苗木,要求苗木地上部分和地下根系部分发育必须协调。根据法国国家森林基金会制定的苗木标准规定,要用苗龄为4～5年生,苗高20～30厘米以上,地径0.5～1.1厘米的大苗壮苗才能进行定植。②重视苗木的搬运和假植。据试验,挪威云杉的根系如在阳光下晒3分钟,这虽不致引起苗木的死亡,
Clouds and fir have mainly been found in the alpine areas such as Zhongdian and Lijiang, which are the main tree species of dark coniferous forest in the mountainous area of northwestern Yunnan. After many years of research and practice, there are still some difficulties in updating after harvesting. In France, logging, burned-out sites or barren hills and other suitable land for cloud and fir plantation renewal and afforestation have their own characteristics in terms of seedling quality, seedling handling and foraging, afforestation density, afforestation methods and other technologies, and some of our experiences Can learn from, is conducive to improving the province cloud, fir regeneration afforestation quality. Now the French cloud, fir seedlings reforestation of the main technical briefings are as follows: ① seedlings strong seedlings afforestation. For the seedlings used for reforestation in the mountains, it is necessary to coordinate the development of the root and shoot parts above and below the ground. According to the standard stipulated by the French National Forest Foundation, seedlings of 4 to 5 years of age, 20-30 cm of height and 0.5-1.1 cm of diameter should be planted. ② attention to the handling of seedlings and fake plants. According to the test, the roots of Norwegian spruce, such as in the sun for 3 minutes, although this will not cause the death of nursery stock,