害虫发生期与发生量是予测予报的两个主要方面,而准确测报害虫的发生量对指导大田防治具有重要意义。从我们收到的《病虫情报》来看,有的未提到发生量,有的虽提到但量级标准不一,有分三级的,也有分五级的,而且各个量级没有严格的量的规定,这就妨碍了虫情测报质量的提高。从1973年起,我们通过调查研究,初步制定出我场主要害虫发生量量级的试用标准,现简介如下,以供参考。 Occurrence and occurrence of pests are the two main aspects of forecasting and reporting, and accurately reporting the occurrence of pests is of great significance in guiding the prevention and control of the field. From the “Pest and Insect Information” we have received, some did not mention the occurrence amount, although some mentioned the magnitude and different standards, there are three levels, there are five levels, and the various levels did not Strict amount of provisions, which hindered the improvement of insect detection quality. From 1973 onwards, through preliminary research, we have tentatively formulated the trial standards for measuring the magnitude of major pests in our field. The brief introduction is as follows for reference.