秋季气温逐渐下降,土壤水分状态较稳定。其次,从苗木的生理方面来看,苗木在落叶时已进入休眠状态,地上部的蒸腾量达到最低的程度,而根系在土壤中的生理活动仍在继续进行。这时栽植的苗木对来年的成活十分有利。秋季栽植的苗木,翌春生根发芽早,晚春干旱季节来临时已恢复正常生长,这样就大大加强了苗木的抗逆性。因此,各地应大力推广秋季造林。秋季造林多数地区采用植苗造林,就是在 Fall temperatures gradually decline, soil moisture status is more stable. Secondly, from the physiological point of view of nursery stock, nursery stock has entered dormancy state when deciduous, and the transpiration of shoots reaches the lowest degree, while the physiological activity of root in soil continues. At this time the seedlings planted in the following year’s survival is very beneficial. Seedlings planted in autumn, next spring roots germinate early, late spring drought season has returned to normal growth, thus greatly enhancing the seedling resistance. Therefore, all areas should vigorously promote autumn afforestation. In most parts of autumn afforestation plantation afforestation, is in