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近年威胁我国南方湿地松人工林的松针褐斑病、赤枯病近似于地方性病害,其发生及危害程度受土壤矿质养分条件所控制。湿地松的感病程度与土壤全钾含量是极显著的负相关,与土壤全氮含量、N/K、P/K和N/P比值均呈显著的正相关。 建立了适用于经研究过的丘陵山区的判别式。应用判别式可只根据土壤测定数据有效地判别或预测一定地区现有的或未来的湿地松林是否可能发病。Q型因子分析得出的林地聚类图进一步说明湿地松针叶病害种类及感病程度与土壤条件及有关的母质类型存在着相关性。在制定湿地松针叶病害防治方案或湿地松造林规划中,须有土壤—立地调查的可靠基础。
In recent years, the pine needle brown spot disease threatened our pine plantation in southern China, and the occurrence of red wilt disease is similar to that of endemic diseases. The occurrence and damage degree of the disease are controlled by the soil nutrient conditions. Sogatella pungens susceptibility and soil total potassium content is a very significant negative correlation, and soil total nitrogen content, N / K, P / K and N / P ratio was significantly positive correlation. A discriminant suitable for the studied hilly region has been established. Discrimination can be used to discriminate or predict effectively only the existing or future wetland pine forests in a given area based on soil data. Q-factor analysis of woodland clustering maps further illustrate the Pinus elliottii disease types and susceptibility to soil conditions and related parent material types there is a correlation. There is a solid foundation for soil-site surveys in the development of pine needles disease control programs or slash pine afforestation programs.