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中国农学通报 ›› 2018, Vol. 34 ›› Issue (33): 135-139.doi: 10.11924/j.issn.1000-6850.casb17090008

• 植物保护 农药 • 上一篇    下一篇

湘北地区思茅松毛虫发生与林分因子相关性研究

徐海舟,沈金辉,杨晓兰,李 密,万 能,罗 炎,张 娟   

  1. 湖南林科达农林技术服务有限公司,岳阳县林业局,岳阳市林业局,湖南省林业科学院;湖南省林业科学院,湖南林科达农林技术服务有限公司,岳阳县林业局,中南林业科技大学;中南林业科技大学
  • 收稿日期:2017-09-04 修回日期:2017-12-08 接受日期:2017-12-25 出版日期:2018-11-22 发布日期:2018-11-22
  • 通讯作者: 徐海舟
  • 基金资助:
    湖南省科技厅重点研发计划项目“农林复合生态系统病虫害绿色防控技术集成与应用”(2016NK2159);湖南省林业厅科技项目“湖南省林 业有害生物普查”(XLK201406)。

Correlation of Dendrolimus kikuchii Occurrence and Forest Factors in North Hunan

  • Received:2017-09-04 Revised:2017-12-08 Accepted:2017-12-25 Online:2018-11-22 Published:2018-11-22

摘要: 摘 要:为切实掌握湘北地区马尾松林思茅松毛虫发生与林分因子关系,采用固定样线踏查和标准地详查的方式对不同林分因子马尾松林思茅松毛虫虫口密度进行了调查,并对影响其种群分布的13个林分因子进行了逐步回归分析。研究筛选出4个关键林分因子,其影响重要程度顺序为:坡向>开阔度>平均胸径>海拔,多元线性回归模型 (y代表影响程度,x1、x2、x5、x13分别代表林分因子海拔、坡向、开阔度、平均胸径),马尾松林思茅松毛虫虫源地具有阳坡、温度较高、植被胸径较大、海拔较低等特点。研究结果为马尾松林思茅松毛虫虫源地改造,以及今后营造抗思茅松毛虫林地提供了理论参考依据。

关键词: 种肥, 种肥, 免耕覆盖, 精密播种, 夏玉米, 生理效应

Abstract: To define the correlation between the occurrence ofDendrolimus kikuchii and forest factors inPinus massoniana forests, an investigation recording the population density of the pest inP. massoniana forest with different forest factors was conducted by means of sampling plot survey and standard plot survey. And 13 forest factors that could influence the population distribution of the pest were analyzed using stepwise regression analysis. Results showed that 4 key forest factors were screened out, the order of importance was: aspect(x 2)> canopy openness(x 5) > average DBH (x 13) > altitudes(x 1), multiple linear regression multivariate was: y = - 1.806 - 0.196x1+ 4.574x2 - 0.320x5+ 0.232x13 .D. kikuchii insect-source site had the characteristics of sufficient sunlight, higher temperature, large diameter, and low altitude. The study can provide a reference basis for the transformation of the insect-source site ofD. kikuchii , and culturing forest with the resistance to the pest.