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低海拔地区白蜡虫的繁殖研究

Studies on the Reproduction of White Wax Scales in Areas of Low Elevation

  • 摘要: 1985~1987年,分别从云南省昭通地区海拔1350m的永善县万和乡和海拔1950m的昭通市卡子村,引白蜡虫种虫在福建三明市海拔185m的岩前地区进行实验。结果表明,白蜡虫世代稳定,一年发生一个世代,种虫平均长9.58mm,宽8.4mm,高8.08mm,怀卵量平均5718粒,最多12789粒,最少1674粒;性比平均1:3.04,最高1:3.8,最低1:2.34;蜡花平均5.61mm,最厚7.74mm,最薄3.74mm;蜡熔点82~83℃,达到国家规定的标准,从而突破了白蜡虫在海拔200m以下地区不能繁殖的界线。

     

    Abstract: From 1985 to 1987, white wax broodscales were successfully introduced to Yanqian district with an elevation of 185 meters in Sanming City, Fujian Province, from Yongshang County with an elevation of 1350 meters and Zhaotong City of 1950 meters in Yunnan Province. These insects grow well in the new habitat with a generation a year. The average length, width and height of the broodscale are 9.58mm, 8.4mm, and 8.08mm respectively and the average, maximum and minimum of egg numbers produced by the broodscale is 5718, 12789 and 1647 eggs respectively; the average ratio of female and male is 1 to 3.04, the maximum 1 to 3.08, the minimum 1 to 2.34; the averaga thickness of wax encrustation is 5.61mm, the maximum 7.74, the minimum 3.74mm. The melting point of the wax is 82℃ to 83℃. From the above results, it appears that in the low elevation areas, white wax scales, whose biological and the other indexes can be comparable to those in the original place, not only can reproduce successfully, but also can produce superior white wax with an encrustation thickness no less than that in the original district, and the melting point reaching the national standard of China. The success of our experiment has solved the problem that white wax scales can not reproduce in the areas under elevations of 200 meters, and laid a scientific basis for the extension of white wax production in low elevation areas.

     

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