由于全球气候变化,我国西北地区春旱严重,造林成活率较低,给林业生产健康快速发展,改善当地生态环境带来了很大的困难。因此,杨树采伐后,利用伐桩上的不定根或休眠芽形成的萌生枝条来更新林带,可收到事半功倍的效果。一、杨树营造的农田林网,达到成熟期需要更新时,在林木休眠期 Due to the global climate change, the spring drought in the northwest of our country is severe, and the survival rate of afforestation is relatively low, which brings great difficulties to the healthy and rapid development of forestry production and the improvement of local ecological environment. Therefore, poplar cutting, the use of stump on the adventitious buds or dormant buds formed by the initiation of branches to update the forest belt, can receive a multiplier effect. First, poplar farmland to create a network of trees, to reach the maturity needs to be updated, dormant trees