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为了寻求有效控制湖北境内橘小实蝇的方法,本文研究了不同浸水时间和沙含水量对橘小实蝇蛹羽化率的影响。结果表明:蛹的浸水时间为12h、24h、48h和72h时,1日龄蛹的羽化率分别为:88.9%、68.9%、53.3%和40.0%;3日龄蛹的羽化率为:91.1%、71.1%、51.1%和37.8%;6日龄蛹的羽化率分别为:93.3%、71.1%、57.8%和40.0%。随着浸水时间延长,蛹的死亡率增加。在沙的相对含水量为20%～60%的条件下,蛹的羽化率较高。蛹的抗干旱能力明显强于抗高湿的能力,在0%的沙相对含水量的情况下,1日龄、3日龄和6日龄蛹的羽化率分别为:62.2%、95.6%、91.1%,在100%的沙相对含水量的情况下,3个龄期的蛹的羽化率分别为:6.7%、8.9%、2.2%。
In order to find a method to effectively control the orange fruit fly in Hubei Province, this paper studied the effects of different water immersion time and sand water content on the emergence rate of pupae. The results showed that the emergence rates of pupae were 88.9%, 68.9%, 53.3% and 40.0% when the water immersion time was 12h, 24h, 48h and 72h, respectively. The emergence rate of pupae was 91.1% , 71.1%, 51.1% and 37.8% respectively. The emergence rates of 6-day-old pupae were 93.3%, 71.1%, 57.8% and 40.0%, respectively. With prolonged immersion, pupa mortality increased. Under the condition that the relative water content of sand is 20% ~ 60%, the emergence rate of pupae is higher. The drought resistance ability of pupae was obviously stronger than that of anti-drought ability. The emergence rates of pupae at 1 day, 3 day and 6 day old were 62.2% and 95.6% at 0% sand relative water content, 91.1%. At 100% sand relative water content, the emergence rates of pupae in three age groups were 6.7%, 8.9% and 2.2%, respectively.