Abstract:

we tested the spatial distribution pattern of Nilapavata lugens on the late rice season. The testing method included the aggregated indices method, Iwao method, and Taylor power law method. All of three methods shown that the distribution pattern of Nilapavata lugens is the assemble distribution type. Moreover, the assemble distribution index increased along with the increasing of their population density. Based on the distribution pattern, we proposed the best sampling method, the best theoretical sampling method, and sequential sampling model.