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作者于1981—1983年在棉花苗龄一致、棉蚜试验基数一致、隔离天敌动物及有翅蚜条件下,利用4—7月份的棉田不同温、湿度条件,研究了棉田温度对棉蚜繁殖速度的影响。结果证明:棉田五日平均温度(以下简称温度)17.6—24.0℃,棉蚜繁殖速度最快,五日内繁殖21.9—46.0倍;温度低于和高于此范围,达12.7℃和25.0—31.2℃时,棉蚜繁殖速度减慢,同期分别繁殖4.2倍和6.3—19.2倍。同时证明:在伏期7月份当温度在上述适温范围内时,棉蚜繁殖速度快,而当温度高至26.7—30.9℃处于适温范围以外时,其繁殖速度同样减慢,同期繁殖4.5—19.2倍。由此说明,确利于棉蚜繁殖的适温范围大体为17—24℃;棉蚜繁殖在5月份苗期和7月份伏期的适温范围基本一致。
In 1981-1983 under the conditions of the same cotton seedling age, the same cotton aphid test base, isolation of natural enemies and winged aphids, the temperature and humidity of cotton field in April-July were used to study the effects of temperature on the reproduction rate of cotton aphid Impact. The results showed that the average temperature of five days in cotton field (hereinafter referred to as temperature) was 17.6-24.0 ℃, cotton aphid had the fastest reproduction rate and multiplied 21.9-46.0 times within five days. The temperature was below and above this range, reaching 12.7 ℃ and 25.0-31.2 ℃ , The cotton aphid reproduction slowed down, respectively, breeding 4.2 times and 6.3-19.2 times respectively. At the same time, it was proved that when the temperature was within the above-mentioned suitable temperature range in July, the propagation speed of cotton aphid was fast, and when the temperature was outside the suitable temperature range of 26.7-30.9 ℃, the reproduction rate of the cotton aphid also slowed down, -19.2 times. The results showed that the optimum temperature range for breeding aphids was 17-24 ℃. The optimum range of aphids for the reproduction in May and July was the same.