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对苏州市吴中区1984—2002年灯诱数据的分析表明,白背飞虱Sogatella furcifera(Horváth)的灯下始见期一般在6月上旬,而主迁峰日则一般出现在7月上旬。1996年后,始见期有提前的趋势。对18年灯诱虫量的时间序列分析表明,田间迁入代虫量与6月份的灯诱虫量相关,田间第1代虫量与迁入代虫量相关,第2代则只与田间第1代和8月份的诱虫量相关。对1986—2002年吴中区白背飞虱田间虫量的分析表明,白背飞虱在田间一般要完成2个世代,20世纪90年代中期之后会出现第3代,表现出低迁入率(平均百穴21头)、高增殖倍数(G1/G0在30～200倍左右)和高峰值密度(16年平均百穴3200头)的种群特征。此间白背飞虱长翅型成虫的比率不高,迁入后便像褐飞虱Nilaparvata lugens(Stl)那样形成了滞留本地的增殖代(7月20日到8月10日)和以本地滞留为害与部分迁出个体混合而成的主害代(8月15日到9月5日),直到8月下旬和9月上中旬,其长翅型比率才会有大幅回升开始回迁,呈现出翅型长-短-长的变化模式。
Analysis of the light-induced data from 1984 to 2002 in Wuzhong District, Suzhou City showed that the light-onset date of Sogatella furcifera (Horváth) was generally in early June, while that of the main Sogatella furcifera (Horváth) generally occurred in early July . After 1996, the initial period has an early trend. The time-series analysis of 18-year-old light-induced insect entrails showed that the amount of migratory insects in the field was related to the light-induced insect population in June. The first generation of field insects in the field was related to the amount of migrant insects and the second generation was only related to the field The first generation and August were related to the amount of parasitism. Analysis of the insect population of white -backed planthoppers in Wuzhong District from 1986 to 2002 showed that the white-backed planthoppers generally completed two generations in the field and the third generation appeared after the mid-1990s, showing a low rate of migration (Average 21 loci), high multiplication ratio (about 30 ~ 200 times G1 / G0) and high peak density (average number of 3200 lochs per 16 years). The percentage of white-backed planthopper long-winged adults was not high at this time. After moving in, it formed a locally proliferating progeny (July 20 to August 10) as did the Nilaparvata lugens (Stl) and retained locally (August 15 to September 5), the long-winged ratio will not rebound sharply until the end of August and the middle of September, showing a Wing type long - short - long change patterns.