凌海地区杨树烂皮病发生情况调查
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摘要
通过对凌海地区杨树烂皮病发生情况的调查,结果表明,烂皮病一般发生在3月下旬,当温度达4～5℃时,菌丝开始活动,病害开始发生;不同杨树品种对烂皮病的感病性具有显著差异,108杨和辽育3号发病程度最重,发病率分别为25.4%和20.3%,感病指数分别为13.6和11.5;造林密度越大,烂皮病发生越重,发病程度与造林密度呈正相关;108杨生长到5～6年生时发病最重,发病率分别为24.9%和25.2%;在不同立地条件下,公路旁杨树烂皮病发病率最高。
Through the investigation of Cytospora canker in Linghai area,the results showed that Cytospora canker generally was in late march in the spring,when the temperature was 4-5 ℃,the hyphae began to move,the disease began to happen.The susceptibility of different poplar varieties to Cytospora canker was significantly different,108 poplar and Liaoyu No.3 had the most serious incidence,with the morbidity of 25.4% and 20.3% respectively,and the susceptibility index of 13.6 and 11.5 respectively.The higher the density of forest,the more serious Cytospora canker,the incidence was positively correlated with afforestation density.The incidence of poplar was the highest when the trees were 5 to 6 years old,which was 24.9% and 25.2% respectively. Under different site conditions,the incidence of Cytospora canker was the highest along the highway.
Through the investigation of Cytospora canker in Linghai area,the results showed that Cytospora canker generally was in late march in the spring,when the temperature was 4-5 ℃,the hyphae began to move,the disease began to happen.The susceptibility of different poplar varieties to Cytospora canker was significantly different,108 poplar and Liaoyu No.3 had the most serious incidence,with the morbidity of 25.4% and 20.3% respectively,and the susceptibility index of 13.6 and 11.5 respectively.The higher the density of forest,the more serious Cytospora canker,the incidence was positively correlated with afforestation density.The incidence of poplar was the highest when the trees were 5 to 6 years old,which was 24.9% and 25.2% respectively. Under different site conditions,the incidence of Cytospora canker was the highest along the highway.
引文
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[2] 刘巍,蔄胜军,纪纯阳,等.我国杨树枝干病害研究进展[J].林业科技开发,2013,27(1):1-4.
[3] 刘巍,蔄胜军,张妍.不同种类杨树品种光合特性及生长性状的研究[J].辽宁林业科技,2015(5):23-28.
[4] 姜岳忠,李善文,秦光华,等.黑杨派无性系区域化试验初报[J].林业科学,2006,42(12):143-147.
[5] 徐明.江苏杨树烂皮病发生与防治技术研究[D].南京:南京林业大学,2010.
[6] 高国平,唐玲,王月,等.2种杨树烂皮病害早春症状[J].东北林业大学学报,2011,39(9):123-125.
[7] 陈原,杨旺.北京杨溃疡病抗病性的研究[J].北京林业大学学报,1994,16(2):51-57.
[8] 曾大鹏.我国杨树病害的研究现状与防治[J].中国森林病虫,2002,21(1):20-26.
[9] 高国平,李庚,祁金玉,等.新民地区主要速生杨树品种及其病害调查研究[J].辽宁林业科技,2009(5):27-28,51.
[10] 刘清虎,史兆兰,王明利,等.杨树烂皮病发生情况调查初报[J].吉林林业科技,2003,32(2):22-24.