环境因子对湿地松林松梢螟发生及其主梢恢复的影响  

The impact of environmental factors on the occurrence regularity of Dioryctria splendidella and the recovery of the main tip of Pinus elliottii

作　　者：付利 夏新权 肖兴翠[1,2] 

机构地区：[1]泰格林纸集团茂源林业科研中心,湖南岳阳414002 [2]中南林业科技大学,湖南长沙410004

出　　处：《湖南林业科技》2014年第1期98-101,共4页Hunan Forestry Science & Technology

摘　　要：以被松梢螟危害的1—6年生湿地松人工纯林为研究对象，对不同林龄、坡向、坡位和地被物环境的虫害发生情况及化学防治当年主梢恢复情况进行调查。结果表明：松梢螟的有虫株率随着林龄的增长而增长，在5．年生林达到100％。东南坡及南坡、下坡和有五节芒生长的湿地松林松梢螟危害最严重；不同林龄、不同坡位湿地松主梢恢复比例均随危害程度的增加而增大；有五节芒的林地主梢恢复比例高于有丝茅草、杂灌、蕨等地被物的林地。3年生林东南坡和南坡有虫株率分别为96．5％和88．9％，5年生林主梢恢复比例达100％；坡位对于主梢恢复没有明显影响。The study on a artificial pure forest of Pinus elliottii with the forest age 1-6 years, by investigating damage of the pest and the current year＇ s recovery of the main tip with an chemical control in the forest with the different forest age, aspect, slope position and ground covers. The results show that the rates of insect-attacked trees increase with stand age, and reach 100% in the fifth year. The most serious pest damages appear at the stand of southeast slope and the southern slope, downhill, and growing with Miscanthus floridulus; The recovery rates of the main tip of the trees increase with the pest damage; The recovery rates were more effective that the stand of growing with Miscanthusfloridulus than oth- ers, stand with growing pantropical weeds, miscellaneous shrubs ferns etc. , and the recovery rates of the 3 years old stand of southeast slope and the southern slope are 96. 5% and 88. 9%, the recovery rates of stand reach 100% in the fifth year; Slope position had no significant effect on the recovery of the main tip of the trees.

关 键 词：环境因子 湿地松 松梢螟 发生 主梢恢复 

分 类 号：S763.7[农业科学—森林保护学]