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我们可以设计和制造出一种气控装置,在实验室,这种裝置利用CO_2、N_2、O_2三种气体,能够产生精确的气体组成成分,各气体在混合气体中的比例为0％～100％。这种装置用以确定气体成分、暴露时间、温度及相对湿度对锈赤扁谷盗成虫和卵死亡率的影响。锈赤扁谷盗成虫死亡率与下述因素有关:CO_2含量70％、80％和90％,O_2含量0％、4％和8％,(其余成分为N_2),相对湿度65％、75％和85％,暴露时间24、48、60、72、84和96小时,流速55±2ml/min,温度10、15、20℃。在相同的CO_2含量、相对湿度和气体流速条件下,锈赤扁谷盗卵的死亡率取决于两种氧气含量(0％和4％)和两种温度(10℃和20℃)。在一定暴露时间内,在CO_2含量为68％～91.7％,O_2含量为0％～5％,平衡气体为N_2的混合气体中,锈赤扁谷盗成虫的死亡率比卵高。当氧含量从4％下降到0％时,对卵死亡率的影响要高于成虫的死亡率,然而,当CO_2含量从68％升高至91.7％时,成虫死亡率比卵的死亡率增加得快些。气体成分和相对湿度(60％～84％)对成虫及卵死亡率的影响要比其它各种因素大。在高CO_2含量(88％～91.7％)、低O_2(0％～1.5％)、高温(19.5～20.5℃)和低相对湿度(60％～63.9％)条件下暴露96小时,成虫和卵的死亡率达到最大值:即分別为96％和85％。
We can design and manufacture a kind of gas control device. In the laboratory, this device uses CO 2, N 2, O 2 gas to produce accurate gas composition. The proportion of each gas in the mixed gas is 0% ~ 100 %. This device was used to determine the effect of gas composition, exposure time, temperature, and relative humidity on adult and egg mortality of A. cuniculariae. The mortality of adult Chilo otorhizobia was related to 70%, 80% and 90% of CO_2, 0%, 4% and 8% of O_2, N_2 of the rest, relative humidity of 65% and 75% And 85% for 24, 48, 60, 72, 84 and 96 hours respectively. The flow rate was 55 ± 2 ml / min and the temperature was 10, 15 and 20 ℃. Under the same CO2 content, relative humidity and gas flow rate, the mortality of Echinodermata scoparia eggs depends on two oxygen contents (0% and 4%) and two temperatures (10 ° C and 20 ° C). In a certain exposure time, the mortality rate of adults was higher than that of eggs in the mixed gas with CO_2 content of 68% -91.7%, O_2 content of 0% ~ 5% and balance gas of N_2. When the oxygen content decreased from 4% to 0%, the effect on egg mortality was higher than that on adult worms. However, when the CO_2 content increased from 68% to 91.7%, the mortality rate of adult worms was higher than that of eggs Got faster. Gas composition and relative humidity (60% ~ 84%) affect adult and egg mortality more than any other factor. Under the conditions of high CO 2 content (88% -91.7%), low O_2 (0% -1.5%), high temperature (19.5-20.5 ℃) and low relative humidity (60% -63.9%), The death rate reached its maximum: 96% and 85% respectively.