将考虑两类具有变时滞非线性有限食物种群模型N(t)=r(t)N(t)K-N(ρ(t)/K+s(t)N(σ(t),t≥0和N(t)=r(t)N(t)K-Nα(ρ(t)/K+s(t)Nα(......