山东省现行家蚕品种鲜茧理论烘率测算

DETERMINATION OF THEORETICAL DRYING PERCENTAGE OF FRESH COCOON PRODUCED BY THE MAJOR SILKWORM VARIETIES OF SHANDONG

本研究经1987～1989年3年的时间,通过在本省部分主要蚕区的多处定点,对春、夏、中秋、晚秋茧鲜茧蛹体、茧层含水率、半干茧还性期间失水率和干茧交售前的回潮率情况进行了较系统的调查测算。结果表明,省内上述几项参数除干茧回潮率因变化很小可忽略外,其余3项在年度、地区间的差异均未达显著水平,而季节间的差异都达显著或极显著水平。为此作者认为,在山东可按养蚕季节分别制定出省内统一的茧层、蛹体适干干燥率指标。

The study was conducted successively from 1987 to 1989 in a lot of regions of Shandong Province. The moisture contents of fresh pupae and cocoon shells, the moisture loss percentage of half-dried cocoons during the moisture regain period and the moisture regain percentage after out-store and before sale were systematically investigated and analyzed with spring, summer, middle fall and late fall silkworm varieties. Statistical analysis ind icated that the differences of these parameters were not significant among years and regions, but significant or very significant among seasons except the moisture regain percentage of dried cocoons in which the variations were very little and could be ignored. It suggests the unified indices of proper drying percentages of cocoons and pupae to be worked out for different seasons.