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“保土防冻更新法”是在更新造林时,不破坏地表,不进行松土整地,只搂去栽植点上的死地被物(约50×50cm),然后用植苗铲或用造林镐或用郭化锹进行栽苗,即为保土防冻更新法.此法是吉林省临江林业局首次提出并经过多年试验,所获得的成功经验。一、更新效果更新效果是指在皆伐迹地上采用人工栽植幼苗而形成的新造未郁幼林,在一定年限内成活情况和有效面积。并把当年的成活率,第三年的面积保存率和幼林生长状况,
The Anti-freeze Measures for the Protection of Poverty System is to renew the afforestation without destroying the surface of the land, without soil preparation, only to hunt down the dead ground (about 50 × 50cm) on the planting site and then use the seedling shovel or the alpinism Guo shovel planted seedlings, that is, anti-freeze method for the protection of soil.This method is Linjiang Forestry Bureau of Jilin Province for the first time and after many years of testing, the successful experience gained. First, the update effect The update effect refers to the use of artificial cutting seedlings in the clear cut of the formation of new Yuyou young, living within a certain period of time and effective area. And the survival rate of the year, the third year of area preservation rate and young growth status,