论文部分内容阅读
在26～28℃,相对湿度65%～80%条件下,用玉米面和麦麸以7:3配方进行的饲养密度试验,结果以每公斤饲料投卵2000粒的处理最好,平均蛹重33mg,平均蛹长10. 2mm,成蛾率38%,单雌产卵354粒,繁殖倍数达49倍。对米娥分布密度和化蛹习性调查发现,饲养盒内米蛾在边角区的分布约占40%,边缘区中间区各占30%。米蛾具有相互紧密靠近,群集化蛹习性,蛹茧多为一层竖状排列,在极拥挤条件下才有二层排列,下层蛹茧排列呈不规则状,羽化时很难钻透饲料面。
Under the conditions of 26-28 ℃ and relative humidity of 65% -80%, the density of 7 and 3 with cornmeal and wheat bran were used as the feeding density test. The results showed that the best treatment was 2000 eggs per kilogram of feed, the average pupal weight was 33mg , The average pupa length 10. 2mm, moth rate of 38%, 354 females ovipositing, reproductive fold up to 49 times. A survey on rice density and pupation habits found that the distribution of rice moth in the feeding box accounted for about 40% in the corner area and 30% in the middle of the marginal area. The moths are close to each other and clustered into pupae. The pupal cocoon mostly has a vertical arrangement with two layers arranged under very crowded conditions. The cocoon of the lower layer is arranged irregularly, and it is difficult to penetrate the feed surface during emergence .