施肥对杂种落叶松人工林幼龄林初期生长的影响  

Effects of Fertilization on the Early Growth of Second Rotation Hybrid Larch Plantation

作　　者：马学发 卫月华 梁凤和 钟兆华 孙志虎[2] 刘力铭 韩子丰 Ma Xuefa;Wei Yuehua;Liang Fenghe;Zhong Zhaohua;Sun Zhihu;Liu Liming;Han Zifeng(Mengjiagang Forestry Farm of Kiamusze, Jiamusi 154411, Heilongjiang, China;Ministry of Education Key laboratory of Sustainable Forest Ecosystem Management, Northeast Forestry University, Harbin 150040, Heilongjiang, China)

机构地区：[1]佳木斯市孟家岗林场,黑龙江佳木斯154411 [2]东北林业大学森林生态系统可持续经营教育部重点实验室,黑龙江哈尔滨150040

出　　处：《林业科技情报》2020年第3期6-8,共3页Forestry Science and Technology Information

基　　金：国家自然科学基金项目(31770670);国家“十三五”重点研发计划课题(2017YFD0600605)。

摘　　要：以三江平原丘陵区长白落叶松人工林皆伐后栽植的杂种落叶松人工林幼龄林为对象,调查了树高和胸径,分析了胸径对施肥的响应特征。研究结果表明,杂种落叶松田间栽植3年后,91.67%的样地的平均树高超过130cm,年高生长量普遍超过30cm;在人工林幼龄林初期,杂种落叶松的胸径对施肥的响应特征不甚明显,但有增加的趋势;施肥3年后,施肥处理的杂种落叶松平均胸径比对照增加0.45cm,提高15.25%;在三江平原丘陵区长白落叶松皆伐迹地上更换造林树种时,可考虑栽植杂种落叶松。The tree height and DBH of young hybrid larch plantation planted after clearing the Larix olgensis plantations of Mengjiagang forest farm on hilly area of Sanjiang plain were investigated and the response characteristics of DBH to fertilization were analyzed.After 3 years of planting in the field of hybrid larch,the average tree height was more than 130cm in 91.67%of the sample plots,and the annual height increment was generally more than 30cm.At the early stage of the plantation,the DBH of hybrid larch was not obvious in response to fertilization,but showed an increasing trend.After 3 years of fertilization,the average DBH of hybrid larch under fertilization increased by 0.45cm compared with the control group,and increased by 15.25%.Hybrid larch can be planted on the clear cutting site of Larix olgensis plantations in hilly area of Sanjiang plain.

关 键 词：杂种落叶松 幼龄林 树高 胸径 高生长量 

分 类 号：S71[农业科学—林学]