期刊文献+

沈阳市城区油松枝枯病病情及分析 被引量:5

Analysis on the Occurrence and of Pinus tobulaeformis Die-back in Shenyang
下载PDF
导出
摘要 采用随机抽样和定点观察的方法对沈阳城区油松发生枯枝病的病情进行调查,并对病害发生规律进行分析。结果显示:该病害在沈阳城区发生普遍,其平均发病率为47.23%,病情指数为14.88。病害发生与立地条件及林分因子关系紧密。阳坡发病轻,平均发病率为79.38%,病情指数为31.41;20~30年生油松发病重,平均发病率为80.02%,病情指数为40.94;林分密度越高,发病越重,林分密度>750株.hm-2的样地的平均发病率为93.04%,病情指数为47.22;树高15m以上的油松发病重,平均发病率为97.28%,病情指数为46.21;油松和红松混交林发病最重,发病率为100%,病情指数为68.59。 The occurrence of Pinus tobulaeformis die-back in Shenyang was investigated by random sampling and on-the-spot field observation,and the occurrence regularity was also analyzed.The results showed that the disease was common in Shenyang.The average disease rate and index were 47.23% and 14.88 respectively.The occurrence of the disease was correlated with forest site and stand factors.Adretto is light,in which the average rate of disease occurrence and index were 79.38% and 31.41 respectively.P.tabulaeformis with ages of 20 to 30 years old took a serious disease,in which the average disease rate and index were 80.02% and 40.94,respectively.The higher of stand density,the disease was more serious.In the sampling areas,in which the stand density was over 750 plants per hm2,the average disease rate and index were 93.04% and 47.22,respectively,Trees with a height of over 15 meters took a serious disease,the average disease rate and index were 97.28% and 46.21,respectively.In the mixed forests of P.tabulaeformis and Korean pine,the disease was more serious,the average incidence and index were 100% and 68.59,respectively.
出处 《西北林学院学报》 CSCD 北大核心 2012年第3期105-108,136,共5页 Journal of Northwest Forestry University
基金 辽宁省沈阳市科技局科技支撑计划项目(p111253-3-00)
关键词 油松 枝枯病 立地条件 林分因子 Pinus tobulaeformis die-back forest site stand factor
  • 相关文献

参考文献10

二级参考文献14

共引文献39

同被引文献33

引证文献5

二级引证文献19

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部