论文部分内容阅读
在室内自然变温（平均２０．２１℃）条件下，组建禾谷缢管蚜和麦长管蚜实验种群生命表。结果表明，禾谷缢管蚜的发育速率快，若蚜存活率高，有翅蚜比率明显偏低；禾谷缢管蚜和麦长管蚜的种群趋势指数（１）分别为５４．４０和３３．７０，净增殖率（Ｒｏ）、内禀增长力（ｒ＿ｍ）及周限增长率（λ）分别为５４．１５和３４．０、０．２４８６和０．１６８８及１．２８２２和１．１８３９．尽管这两种麦蚜成蚜期远长于若蚜期，但由于内禀增长力均相当大，使得稳定年龄分布中若蚜的比率分别高达９０．３５％和８９．３１％。
In the indoor natural temperature (average 20.21 ℃) conditions, the establishment of cereal aphid and wheat aphid laboratory population life table. The results showed that the developmental rate of H. armigera was high, and the survival rate of aphid was high, while the percentage of winged aphid was significantly lower. The population trend index (A) of S. avenae and M. avenae were 54.40 and 33.70, net growth rate (Ro), intrinsic growth rate (r_m) and growth rate (λ) were 54.15 and 34.0,0.2486 and 0.1688 and 1.2822 and 1, respectively. 1839. Although the two kinds of wheat aphids have a much longer aphid stage than that of the aphid stage, their intrinsic productivity is quite high, resulting in stable age distributions of asphodeloximanes as high as 90.35% and 89.31%, respectively.