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兴安落叶松是春季萌动生长早的树种,幼树抗旱能力差,特别是新植的幼树对水分要求更高。我局1978年更新造林普查:西南坡17°下部土壤含水量在50％左右的,当年营造的兴安落叶松成活率为95％以上;中部土壤含水量在30％左右的,成活率为87％;上部土壤含水量在20％以下的,成活率为67％.上述结果表明,土
Larix gmelinii is a tree that grows early in spring and has poor drought tolerance. In particular, newly planted saplings require higher water content. In 1978, the Bureau updated the afforestation survey: the survival rate of the Larix gmelinii Larvae was more than 95% when the soil moisture in the lower reaches of 17 ° on the southwestern slope was about 50%; the survival rate of Larix gmelinii was 95% ; The upper soil moisture below 20%, the survival rate was 67%. The above results show that the soil