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近几年来,我们在实践中发现花生蚜在田间分布很不均匀,因此,我们对花生蚜进行了多次、多点、广泛的田间调查,并利用生物数学方法进行了计算,确定了花生蚜虫是一种聚集分布型,为指导防治提供了依据。具体计算如下: 空间分布型 1.调查方法 选择春花生田15块,面积100多亩,随机取点一百个,每点十墩,共查一千墩,调查的结果见表一:
In recent years, we found in practice that peanut aphids are unevenly distributed in the field. Therefore, we conducted many, more and extensive field surveys on peanut aphids and calculated them by using the bio-mathematics method to determine peanut aphids Is a kind of aggregation distribution, which provides a basis for guiding prevention and treatment. The specific calculation is as follows: Spatial distribution 1. Survey Method Chunhua Shengtian 15, an area of 100 mu, randomly selected one hundred, each point of ten piers, a total of one thousand pier survey, the results of the survey in Table 1: