Studies on the population distribution pattern and sampling technique of Aphis medicaginis in the peanut field.
Author of the article:WU Li-Min
Author's Workplace：(Agricultural Technology Extension Centre of Xinyi City, Jiangsu Province 221400, China).
Key Words：Aphis medicaginis; distribution pattern; sampling technique
Abstract：Three methods of aggregated indices and power law of Taylor and regressive relation by M*-m were used to test the population distribution pattern of Aphis medicaginis Koch in the peanut field.The results showed that the mixed population