日本落叶松人工造林技术对幼树生长影响

Correlation Between Afforartation Method and Young TreeIncrement for Japanese Larch

本项试验采用３种密度×３种整地规格×２种抚育方式的析因田间试验设计，建立多点试验林。从４年生试验林幼树生长量来看，可初步认为日本落叶松造林以株行距１．５ｍ×２．０ｍ，密度３３３０株·ｈｍ－２，整地穴径４０ｃｍ为宜。

The experiment adopted three teatments of tree density,three types of land preparation and two methads of tending in the factor analysis design,several experiment plantations were established.The results of the 4-year-old trees indicate that 1.5m×2.0m spacing or the density of 3 330 trees per hectare,40cm in diameter of the planting cavity in preparation of land were suitable.As for the tending method,2 times of shrub removal in the beginning 2 years and that with one time of weeding in addition were similar to the increment of tree height and B H D.