害虫兴衰规律,除了与害虫本身的特性有关外,主要受环境条件的制约。在考虑环境条件的时候,既注意到各种气候条件如温度、湿度,还要注意大多数昆虫借以越冬和生存的土壤环境的影响,以及生物因子的影响等,如食料因子和天敢因子,力争做到定量的分析。第二篇,病理基础知识,告诉 The law of the rise and fall of pests, in addition to the characteristics of the pests themselves, mainly due to environmental conditions. When considering the environmental conditions, not only the various climatic conditions such as temperature and humidity are noted, but also the effects of the soil environment on which most insects winter and survive, as well as the biological factors such as food-stuffing factor and daring factor, Strive to do quantitative analysis. Second, the basic knowledge of pathology, told