摘要
通过对吉林省伊通满族自治县域内长白落叶松人工纯林的落叶病病情指数与土壤性质关系调查发现,长白落叶松纯林病情指数在白浆土林地明显高于暗棕壤林地。对2类A层(腐殖质层)、B层(淀积层)土壤理化性质进行分析,结果表明:长白落叶松人工林落叶病病情指数与林地土壤的氮、磷、钾营养元素的含量无关,而与土壤类型、土壤pH、吸湿水量、土壤容重等有较显著的关联关系。白浆土土壤B层的质地黏重、板结、透水透气性差、酸性增强与病情指数升高具有显著的关联关系,可能是吉林省中部地区长白落叶松人工林落叶病病情指数较高的主要原因。
The relationship between the disease index of Mycosphaerella laricileptolepis and properties of the soil in pure plantation of Larix olgensis in Yitong Manchu Autonomous County in Jilin Province was investigated in this paper.The results showed that the disease index in the site with albic soils was significantly higher than that in the site with dark brown soils.The physical and chemical properties of two kinds of soils in layer A(humus layer)and layer B(sediment layer)were analyzed.The results showed that the disease index was not related to the contents of N,P and K in the forest soil,but was significantly related to soil type,soil pH,moisture absorption,and soil bulk density.There was a significant correlation between the increase of disease index and the heavy texture,consolidation,poor water permeability and air permeability,and acid enhancement of the albic soil in layer B.That might be the main reason for the high disease index of Mycosphaerella laricileptolepis in Larix olgensis plantation in the central part of Jilin Province.
作者
楚秋冬
马洪民
李志斌
李春福
杜玉东
CHU Qiudong;MA Hongmin;LI Zhibin;LI Chunfu;DU Yudong(Forestry Work Station of Yitong Manchu Autonomous County in Jilin Province,Siping 130700,China;Yingchengzi State-owned Forest Protection Center of Yitong Manchu Autonomous County in Jilin Province,Siping 130704,China;Huanglingzi State-owned Forest Protection Center of Yitong Manchu Autonomous County in Jilin Province,Siping 130717,China)
出处
《吉林林业科技》
2023年第4期21-25,共5页
Journal of Jilin Forestry Science and Technology
关键词
长白落叶松
落叶病
土壤理化性质
土壤容重
Larix olgensis
Mycosphaerella laricileptolepis
physical and chemical properties of the soil
soil bulk density