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本文根据种群生命系统的概念和分析,组建了模拟褐飞虱(Nilaparvata lugens St(?)l)种群动态的计算机模型。该模型包括一个多列矩阵和一组差分方程。多列矩阵用于描述褐飞虱种群的龄期重叠现象及其年龄——虫态结构;差分方程用于计算种群的增长过程。在建模时,我们把10日度作为褐飞虱发育的一个年龄,用天作为模拟的时间步长,同时利用了褐飞虱特定龄期的发育速率,根据生命表数据计算的特定龄期存活率、长翅型成虫的迁飞类型及数量、雌成虫的生殖力等有关资料。经过采用福建省龙海、福州和沙县三个地方1896—1990的实际观测资料与模型的预测结果进行比较,验证了该模型的有效性和准确性;通过改变模型的主要输入变量,得到了各种不同的输出结果,由此对模型的行为及真实性作了分析。笔者认为该模型可用于进一步研究褐飞虱的生物学、生态学以及综合治理的基础,稍作改进,也可用于描述其它昆虫的种群生命系统。
Based on the concept and analysis of population life system, a computer model to simulate the population dynamics of Nilaparvata lugens St (?) L was established. The model includes a multi-column matrix and a set of difference equations. Multi-column matrices are used to describe the age-pest overlap of BPH population and its age-insect morphology. Difference equations are used to calculate the population growth. In modeling, we use 10 days as an age of BPH development, using days as the time step of the simulation, taking into account the specific growth rate of BPH, specific age survival calculated from life table data, long Wing-type adult migratory types and the number of females fecundity and other relevant information. After comparing the actual observation data of 1896-1990 with those of the model in Longhai, Fuzhou and Shaxian County of Fujian Province, the model is validated and the accuracy is verified. By changing the main input variables of the model, Different kinds of output results, which analyzes the behavior and authenticity of the model. The author believes that this model can be used to further study the biology, ecology and integrated management of BPH. It can be used to describe the population life system of other insects with some improvements.