沙地樟子松人工林结构调整技术研究  

Structure Adjustment Technology of Pinus sylvestris var.mongolica Plantation on Sandy Land

作　　者：杨树军[1] 尤国春[1] 肖巍[1] 刘敏[1] 于致龙 

机构地区：[1]辽宁省固沙造林研究所,辽宁阜新123000 [2]辽宁省青山保护局,辽宁沈阳110036

出　　处：《防护林科技》2015年第4期16-19,28,共5页Protection Forest Science and Technology

基　　金：国家林业公益性行业科研专项(201004063)

摘　　要：在科尔沁沙地南缘的章古台沙地,选择轻度染病的樟子松中龄林为对象,进行4种方式的林分结构调整试验。结果表明:结构调整促进了林分生长,控制了松枯梢病的发展,改善了林下植被状况和林分土壤水分状况,缓解了林分在干旱期的水分胁迫。综合不同结构调整方式促进樟子松人工林生长和改善林分环境条件的效果:伐3留2、伐4留2方式好于伐2留2、伐3留3方式,生产上可根据现有樟子松人工林的生长状况,结合混交树种特性,采用适宜的调整方式。Experiments of structure adjustment with four modes were conducted by selecting half‐matured & mild‐infected Pinus sylvestris var .mongolicaplantation on Zhanggutai sandy land of southern of Horqin Sandy land .Re‐sult shows that structure‐adjustment measures promote growth of stand ,restrain development of Sphaerosis sap‐inea ,improve conditions of understory vegetation and conditions of soil moisture for the stand ,relieve water stress during the drought season .The measures of cutting three‐row leaving two‐row and cutting four‐row leaving two‐row are optimal in promoting the growth of plantation and improving the circumstance condition of the stands than that of cutting two‐row leaving two‐rowing and cutting three‐row leaving three‐row .Optimal adjustment methods should be taken according to the growth status of Pinus sylvestris var .mongolica plantation and the character of mixed tree species .

关 键 词：樟子松人工林 结构调整 沙地 

分 类 号：S791.253[农业科学—林木遗传育种]