A STUDY OF PADDYSTEM BORER (SCIRPOPHAGA INCERTULAS) POPULATION DYNAMICS AND ITS INFLUENCE FACTORS BASE ON STEPWISE REGRESS ANALYSIS

摘要

Paddystem borer (Scirpophaga incertulas) is a serious rice pest. The damaged plants wither into dead tassel or white tassel. Such damage leads to decreased in rice production. In order to control the damages of paddystem borer efficiency, it is very important to analyze and study the regulation of population dynamics and the related factors affecting the development. This investigated the population dynamics of paddystem borer by means of light trap in JianShui County in Yunnan of China during 2004 to 2006, and analyzed the meteorological conditions affecting the population dynamics. The research suggests that: there exists a significant relationship between the population dynamics of paddystem borer and meteorological factors, among it, The most influenced are the average minimum temperature per month and relative humidity (RH).