据报道,用刺槐优良无性系造林,材积增益在30％以上,因此,进行刺槐品种选择和利用,有十分重要的意义。1980年我们引进17个按照表现型选择出来的优良单株,进行了无性系测定,到1986年5月调查了试验地。现将结果整理如下。 It has been reported that afforestation with excellent clones of Robinia pseudoacacia, timber volume gain of 30% or more, so the selection and utilization of acacia species, is of great significance. In 1980, we introduced 17 excellent single plants selected according to the phenotype and tested the clones. By May 1986, we investigated the experimental plots. The results are now organized as follows.