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系统调查了大豆蚜在3个大豆品种(辽豆15、辽豆18和辽豆22)上的种群发生动态,并在温室自然变温条件下利用小纱网笼罩法组建了大豆蚜在这3个大豆品种上的实验种群生殖力表,以了解不同大豆品种对大豆蚜的抗性差异。结果表明:大豆蚜在辽豆22上发生量明显低于辽豆18和辽豆22。种群净增殖率(Ro)、平均世代历期(T)和内禀增长率(rm)参数值均表现为辽豆18>辽豆15>辽豆22。因此,在3个大豆品种中,辽豆22最不适合大豆蚜生长发育和繁殖。
The population dynamics of soybean aphid on three soybean varieties (Liao bean 15, Liao bean 18 and Liaodou 22) were systematically investigated. The soybean aphid was established in the three The experimental population fecundity table on soybean varieties was used to understand the differences in resistance of different soybean varieties to soybean aphid. The results showed that the occurrence of soybean aphid in Liaodong 22 was significantly lower than that of Liaodou 18 and Liaodou 22. The values of net reproduction rate (Ro), average generation period (T) and intrinsic rate of increase (rm) of the population showed Liao bean 18> Liao bean 15> Liao bean 22. Therefore, among the three soybean varieties, Liao bean 22 is the least suitable for the growth and reproduction of soybean aphid.