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Spatial distribution pattern and sampling method on eggs of Agrotis ipsilon

LIU Hong mei, LONG Ling (Plant Protection Station of Bijie Prefecture, Bijie 551700,China)  
Several aggregation indices and the Taylor method were used to test the spatial distribution of eggs of Agrotis ipsilon. The results showed the distribution pattern belongs to aggregative distribution in various ecological environments such as the cabbage fields, potato fields and wheat fields. Based on analyzing factors of aggregation Taylor method was used to obtain theoretical sampling model of the eggs.
【CateGory Index】: S433.82
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