松突圆蚧对马尾松危害程度与生态因子关系的研究  

RELATIONSHIP BETWEEN THE ECOLOGICAL FACTORS AND THE DAMAGE LEVEL OF PINUS MASSONIANA FOREST ATTACKED BY HEMIBERLESIA PITYSOPHILA

作　　者：顾茂彬[1] 王宝生 李意德[1] 杨曾奖[1] 邱坚锐[1] 陈佩珍[1] 陈芝卿 连俊和 翁锦泅 

机构地区：[1]中国林业科学研究院热带林业研究所 [2]广东省惠东县林业局

出　　处：《林业科学研究》1990年第6期562-567,共6页Forest Research

摘　　要：松突圆蚧危害程度的划分是以2年生枝条上松针的保存率、枝梢形状和生势作为依据,用60株平均木树干解析连年生长量验证,准确率达87.73%。对惠东、深圳等6个县(市)9个调查区60块标准地的综合调查结果:危害轻度和中等的林下植物多为草本植物群丛组、桃金娘群丛,其土层松厚肥沃;危害较严重和严重的林下植物多为芒萁群丛、马唐+芒萁群丛及山的上部,其土壤酸度大、瘠薄。林分因子中,郁闭度与危害程度呈多项式二次幂关系,郁闭度0.5～0.65的危害最轻;水汽压与郁闭度也呈多项式二次幂关系,郁闭度0.5～0.6的水汽压最低。合理的修枝间伐,控制林分郁闭度在0.5～0.65之间,可提高林木的抗虫性。Damage level by Hemiberlesia pitysophila was classified based on the survival rate of needles of 2-year-old branches, shape of shoot and growing potential. Its accurate rate was up to 87.75 % which was verified by current annual increment of stem analysis of 60 mean sample-trees. The comprehensive investigation of different subjects, which was done in 60 plots of 9 survey areas distributing over 6 counties and cities (Huidong, Shenzhen etc.), has revealed that light to medium damage to the forest floor most is the herb association group and Rhodomyrtus tomentosa association where the soil layer is deep, loose and rich, while relative serious to serious damage is Dicranopteris linearis association, Digitaria sanguinalis and D. linearis codom-inant association and in the top of the hill where the soil is poor and highly acidic.Among the factors of the stand, the relationship between canopy and damage level is represented by a polynomial second power equation and the lightest damage occurs in the forest of 0.5~0.65 canopy density. Water-vapour pressure also has a polynomial second power equation with canopy density and the lowest pressure value is obtained in the forest of 0.5~0.65 canopy density. Therefore, a resonable pruning, thinning and controlling canopy density between 0.5-0.65 may enhance the resistance of the forest against Hemiberlesia pitysophila.

关 键 词：松突圆蚧 危害程度 马尾松害虫 林分特征 林下植物 土壤 小气候因子 

分 类 号：S763.35[农业科学—森林保护学] S763.712.4[农业科学—林学]