直播红松造林是加速营林生产建设的一项可取措施。它可节省圃地,节省育苗管理的人力、物力和费用。但如何做好幼苗期的除草保苗工作是关键一环。1988年一面山林场用40％莠去津(阿特拉津)进行小面积试验,取得较好效果。东丰县一面山林场于1986年春,在低质低产落叶松成林皆伐迹地上进行红松直播造林,密度为1×1.5米(每公顷6600株),苗龄3年时,平均高为7～8厘米,平均地径 Direct broadcasting of Korean pine is to speed up the construction of forest production and operation of a desirable measure. It can save land and save the manpower, material and expense of seedling management. However, how to do a good job of seedling weeding seedlings is a key element. 1988, a mountain forest with 40% atrazine (atrazine) small area test, achieved good results. Dongfeng County, one side of the mountain forest in the spring of 1986, low-quality low-yield larch forest are logging afforestation direct afforestation pine, the density of 1 × 1.5 meters (6600 plants per hectare), seedling age of 3 years, an average of 7 ~ 8 cm, average diameter