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对于杨树速生丰产林,国内外都很重视,我省也有较快的发展.为进一步总结经验,提高栽培技术,一九七八年十月至十一月,在省林业厅领导下,由省林科所,烟台地区林科站、长清县林业局、莒县林业局和胶南县林科所等单位的八位同志组成杨树丰产林调查组,在全省范围内作了调查.共调查四十四处林场和苗圃,这些场圃分布于九个地区二十三个县.调查对象是欧美杨类的四个品种.着重探讨了环境条件对其生长的影响.共设临时标地一百三十七块,现将调查资料整理如下,仅供参考.
For poplar fast growing forest, both at home and abroad attach great importance to our province also has a faster development.In order to further sum up experience and improve cultivation techniques, from October to November 1978, under the leadership of the Provincial Forestry Department, from Provincial Forestry Branch, Forestry Station in Yantai, Forestry Bureau of Changqing County, Forestry Bureau of Shexian County and Forestry Branch of Jiaonan County formed a survey team of Yangshufeng Forestry Bureau and investigated in the whole province. A total of 44 forest farms and nurseries were surveyed and distributed in 23 counties in nine districts. The survey was conducted on four varieties of poplars in Europe and the United States, focusing on the impact of environmental conditions on their growth. To one hundred and thirty-seven, the survey information is now organized as follows, for reference purposes only.