我省杨树施肥方面的试验研究资料较少,施肥的作用又具有明显的地区性,在生产实践中确定施肥量时往往存在着较大的盲目性。我们针对杨树人工林施肥种类和施肥量问题,在省内不同土类的杨树林地进行了试验。本文仅就1982年以来在长清县西仓的试验,经整理侧重于施肥量方面作如下介绍,供参考。 There are few experimental research data on poplar fertilization in our province, and the role of fertilization is obviously regional. There is often large blindness in determining fertilization amount in production practice. We deal with poplar plantation fertilizer types and fertilizer levels, in the province of different soil poplar forests were tested. This article only since 1982 in Changqing County, West warehouse test, finishing by focusing on the amount of fertilizer for the following introduction for reference.