要想使大面积造林,实行全盘机械化,就必须将行距宽度增加到2.5—3.0米。在宽行距的人工林里,松土深度为6—12厘米,而在某些地段中,造林后第四年还应在行间再深耕20—22厘米。当前,对人工林深松土问题有两种不同意见:认为,在人工林中松土甚至5厘米深,就会降低树苗生长强度。则认为,在人工林中深松土,对苗木的生长和状况没有发生影响。 In order to make a large area of ​​afforestation, the overall mechanization, we must increase the line width to 2.5-3.0 meters. In wide-spaced plantations, the soil depth is 6-12 cm, while in some locations the fourth year after afforestation should be further 20-22 cm deep between rows. At present, there are two different opinions on the deep loosening of planted forests: It is believed that loosening of even 5 cm deep in planted forests will reduce the strength of sapling growth. It is considered that deep loosening of soil in plantations does not affect the growth and status of seedlings.