盐池风沙地区,育苗种条十分缺乏,绝大部分依靠外地供应,为了扩大种条来源,加快扦插育苗速度,我们遵照毛主席“自力更生,艰苦奋斗”的教导,从1971年开始,试用修剪下的杨树枝条进行夏季扦插的2亩杨树,成活达80％以上,现将夏季绿枝扦插育苗的主要技术措施介绍如下: 一、插穗的剪取春秋两季育苗,均用一年生条,侧芽饱满;而夏季修剪下的2～3年生杨树条,侧芽萌发成小枝,因而插穗剪取的方法不同。具体做法是:将修剪下的杨树枝条,剪成20厘米长的 Yanchi sandstorm areas, seedling is very lack of breeding, most rely on the supply, in order to expand the source of species, speed up the cutting seedling growth, we follow Chairman Mao “self-reliance, hard work,” the teaching, from 1971, the trial pruning Poplar branches for the summer cuttings of 2 acres of poplar, survival rate of more than 80%, now the summer green branch cutting seedlings of the main technical measures are as follows: First, the cutting cuttings Spring and autumn seeding, are with annuals, lateral bud full ; And summer pruning 2 ~ 3 year-old poplar, lateral buds sprouting into twigs, and thus cuttings of different ways. The specific approach is: under pruning poplar branches, cut into 20 cm long