摘要
稻纵卷叶螟—水稻生态系统包括如下成份:卷叶螟,水稻,自然天敌,天气,管理措施。根据系统成份的分析,建立了该系统的模拟模型,包括:卷叶螟Leslie矩阵模型,发育率模型、产卵模型,水稻生长发育预测模型,叶面积及产量损失模型,日温度变化模拟模型。系统模拟结果表明:系统对成虫期和5龄幼虫期比较敏感.捕食天敌和极端天气对系统影响很大,采用化学防治措施虽然可以降照当代虫口密度,但下代种群数量反而增加。系统验证结果基本符合田间实际情况.
The main components of the rice leaf roller—rice plant ecosystem are rice plant, rice leaf roller, natural ecemies, weather and managment measures, According to the analysis of the ecosystem components, 6 models were developed: Leslie matrix model of pest population, development rate model, oviposition model, prediction model of plant development, loss model of productivity, and simulation model of daily temperature, The simulation was made and the results showed that the ecosystem was sensitive to the adult, the 5th instar larvae, the predators and the extreme weather condition.Chemical measures could suppress the pest population, but the density of next generation would increse adversely.The simulation results basically fits what occurred in the field.
出处
《中山大学学报论丛》
1989年第1期44-58,共15页
Supplement to the Journal of Sun Yatsen University
关键词
稻纵卷叶螟
水稻
生态系统
分析
rice leaf-roller
rice plant
ecosystem, simulation
analysis
