森林病虫害调查是一项专业性调查,具体调查方法很多。不管那一种方法,都是建立在数量的统计和分析的基础上,利用调查所得的材料进行比较分析,以便为病虫的预测预报和制订防治规划提供依据。森林病虫害调查的程序一般分为踏查和详细调查。踏查是了解大面积林地或某一地区总 Forest pests and diseases survey is a professional investigation, the specific investigation of many ways. Regardless of the method, the methods are based on the statistics and analysis of the quantity, and the materials obtained from the surveys are used for comparative analysis in order to provide the basis for the prediction and prediction of pests and diseases and the formulation of prevention and control plans. Forest pests and diseases survey procedures generally divided into step investigation and detailed investigation. Tcha check is to understand the large area of ​​woodland or a region total