摘要
通过两年的系统调查及数据资料分析 ,明确了国槐行道树叶螨的种群消长与环境因子有着密切的关系 :高温干燥的气候是叶螨猖獗为害的决定因子 ;持续 2 5℃以上的日均温度和 70 %以下的空气湿度是叶螨种群急剧上升的最适条件 ;连阴雨及其产生的高湿天气对叶螨种群有明显的抑制作用 ,而大雨、暴雨、冰雹和急剧降温天气对叶螨有显著的冲刷和杀伤作用 ;
After a systematic investigation and analysis of the data obtained, it was found that the dynamics of the spider mite population was closely related to the environmental factors. High temperature and dry climate were decisive factors for the injury of spider mite. The most suitable conditions for the population expansion of spider mate were above 25℃ constant daily average temperature and less than 70% humidity. The mite population could be inhibited by constant rainy climate and resulted high humidity with high temperature. Heavy rain and rapid temperature drop could wash away and kill mites. The host of parasite nutrition and natural enemies influenced the change of mite population.
出处
《西北林学院学报》
CSCD
北大核心
2000年第3期76-79,共4页
Journal of Northwest Forestry University
基金
西安市科委攻关项目!"西安市国槐叶螨及夏季落叶综合治理研究"
