摘要
近年来,东北三省营造了相当数量的红松(Pinus koraiensis Sieb.et Zucc.)无性系种子园,目前普遍存在结实偏低的问题。我所于1981—1986年在草河口红松无性系种子园进行了整形修剪实验,1986—1990年分别在草河口红松无性系种子园和本溪县清河城实验林场的红松无性系种子园,对促进结实效果明显的整形修剪技术进行了中试,取得了显著的增产效果。一、试验地概况试验地设在辽宁省本溪县草河口山城沟。位于东经123°51′,北纬40°53′。
A pruning test has been carried out in a 12-year-old seed orchard of Pinus koraiensis clonal for heightening per unit yield of seeds at Cao He kou since 1981. The pruning technique which promoted fruitage obviously had been used in a intermediate trial. The results indieated that the pruning conducted one month before flowing of sap, cutting out the main shoot and maintaining 3 to 5 leteral branches among the upper branches to be used as future multi-branch of maternal tree, can yaise the fructification amount up 40％ than that of the trees which were not pruned at that stage.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1992年第4期349-352,共4页
Scientia Silvae Sinicae
关键词
红松
修剪
结实
矮化
Pinus koraiensis seed orchard
Pruning technique
Promoting fructification
Tree dwarfing
