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地下害虫是我国北方农作物重要敌害,作物受害后引起严重缺苗而减产,而以在黄淮地区发生特别严重。安徽省淮北阜阳、宿县两个专区,苏北的徐淮地区和河南山东南部等地,也同样存在着这个问题。解决地下害虫问题,是目前农业生产的一个急迫任务。 黄淮地区的地下害虫种类复杂,在同一地区内会同时发生几种地下害虫,即在一块地里也常会同时发生几种害虫,这种情况是淮北地区的特点。概括而言,沿陇海路各县以华北蝼蛄为主,愈近淮河愈是复杂,绝大部分地区是混生区。了解这种发生类型是非常重要的,因为在混生区内即是同一类害虫,例如金龟(虫甲)(蛴螬)就有几种,这些种类发生时期也不一致,因而形成田间出现数量和虫龄大小有很大的不同,即同一种害虫,由于生活史迭置,所以作物每年受害程度有所不同。总之,了解混生区的复杂性,在制定防治策略和方法上是非常重要。我们过去根据一般资料以为安徽临泉主要是金针虫为害,宿县一带是蝼蛄为主,但经过一年多的深入了解,这些地区都是属于混生类型。例如,
Underground pests are important predators of crops in northern China. After crop damage, serious shortage of seedlings is caused and production is reduced. However, pests are particularly serious in Huanghuai region. There are also two problems in Fuyang and Suxian in Huaibei, Anhui Province, Xuhuai in Northern Jiangsu, and southern Shandong in Henan. To solve the problem of underground pests is an urgent task of agricultural production. Huanghuai area underground pests species complex, in the same area will occur at the same time several kinds of underground pests, that is, often in a piece of land where there will be several pests, this is the characteristics of Huaibei. To sum up, the counties in Longhai Road are mainly dominated by Scrubs in North China. The more recent the Huaihe River is more complex, the vast majority of areas are mixed areas. It is very important to understand this type of occurrence because there are several species of the same pest in the mixed area, such as beetles (slugs), and the occurrence of these species is also inconsistent, resulting in the number of occurrences and insects in the field The size is very different, that is, the same type of pest, due to the overlapping of life history, so the extent of crop damage each year is different. In conclusion, understanding the complexity of mixed areas is important in developing prevention strategies and approaches. In the past, according to the general information, we mainly thought that the root of Linquan in Anhui Province is the golden worm and the area in Suxian County is predatory. However, after more than a year of thorough understanding, these areas belong to the mixed type. E.g,