【摘要】 通过在不同温度和食物条件下对玉米象的饲养试验,观察到玉米象的生长、发育、繁殖及形态所受的影响,在33℃以上的温度条件下,玉米象成虫虽能成活一段时间,但不能繁殖子代。以10天为年龄间隔,31℃条件下,平均世代期T=5.2146;瞬时增长率r=0.6499;周限增长率λ=1.9153;净填殖率R₆=29.6400。27℃条件下,T=6.8540;r=0.5262;λ=1.6925;R₀=36.8317。玉米粒和大米饲养出的玉米象子代成虫,在形态上具有明显的差异。更多还原

【Abstract】 Test was passed through feeding on maize weevil in different temperatures and foodstuffs conditions,and significant effect on the growth,development,reproduction and morphology of maize weevil,had been observed:when temperature was above 33℃,adult weevil might survive but might not reproduct.Taking 10 days as an interval of age,at 31℃,the mean generation T=5.2146, the instantaneous rate of increase r=0.6499,finite rate of increase λ=1.9153,the net replacement rate R₀ =29.6400, while at27℃, T=6.8540, γ=0.5262.λ=1.6925,R₀=36.8317.The morphology of maize weevil fed on corn was significantly different from that of maize weevil fed on rice.更多还原