摘要
1985—1989年在武昌研究了亚洲玉米螟种群动态及玉米受害后产量损失,组建了用于玉米螟预测和防治的多元动态经济阈值模型。模型在计算机上显示全部过程,模拟模型经过生产实际检验,效果良好。
The population dynamics of Asian corn borer(ACB) Ostrinia furnicalis and the yield loss caused by it were studied in Wuchang in 1985—1989. A general model for its multivariate dynamic economic threshold is established as Where X is the interval from emergence of first eggmass to sampling date, t denotes time, and a and b are Logistic parameters which are varied with defferent ACB generations. The value of Ki(p_1,p_2,...,p_n) is determined by state i, which is described with a property serial value Pj(j=1,2,...,n) named state index. The model is programmed through IBM PC/AT microcomputer and validated in corn production.
出处
《应用生态学报》
CAS
CSCD
1992年第3期247-252,共6页
Chinese Journal of Applied Ecology
基金
国家自然科学基金
关键词
亚洲玉米螟
模拟模型
动态经济阈值
Asian corn borer, Simulation model, Multivariate dynamic economic threshold.
