Fertilizing in both early fast growing period and autumn can not only enhance seedling growth but also increase cold resistance.

既有速生前期施肥又有秋季施肥的处理，不仅提高了苗木的生长量，而且增强了苗木的抗寒性。

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Experimental results indicated that for the introduced fast-growing poplar and willow the cutting cultivating and the seedling planting of all clones had no significant difference in survival rate.

对优良林草品种的选择和林草复合经营技术试验结果表明：引进的速生杨、速生柳各无性系间的扦插繁育和植苗造林成活率均不存在显著性差异；

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