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为了解决蓖麻蚕越冬保种問题,省农业科学院蚕桑研究所与安徽农学院蚕桑系合作进行了研究,现将結果簡报如下: 一、代用飼料冬季保种办法:自1962年1月用小白菜、铁链草、臭椿叶三种代用飼料飼养蓖麻蚕,进行保种,效果良好。第一代从1月10日到3月18日用小白菜飼养,全龄期經过二十九天二十三小时,幼虫生命率92.5％。制种情况,羽化率86.3％,交配率68.9％,平均单蛾产卵量零点三八克,孵化率93.6％。第二代从3月18日至5月20日,用铁链草飼养,龄期經过二十三天二十三小时,幼虫生命率98％,制种情况,羽化率83.6％,交配率86.6％,平均单蛾产卵量零点三五克,孵化率96.7％。第三代从5月20日起,用臭椿叶、铁链草、蓖麻叶飼养,蚕儿生育良好,达到預期效果。
In order to solve the winter castor silkworm conservation problems, the Provincial Academy of Agricultural Sciences Institute of Sericulture and Anhui Agricultural College Department of sericulture in cooperation with the study, the results are summarized as follows: First, the alternative feed winter conservation measures: since 1962 January with small Cabbage, chain grass, stinkbug leaf three kinds of alternative feed breeding castor silkworm, for conservation, the effect is good. The first generation was bred with Chinese cabbage from January 10 to March 18, and the whole life span was 29 days and 23 hours. The larval life rate was 92.5%. Seed production situation, the emergence rate of 86.3%, the mating rate of 68.9%, the average single moth fecundity 0.38 grams, hatching rate of 93.6%. The second generation from March 18 to May 20, with chain grass feeding age of 23 days twenty-three hours, the larvae of 98% of life, seed production, the emergence rate of 83.6%, mating Rate of 86.6%, the average single moth fecundity 0.53 g, hatching rate of 96.7%. The third generation from May 20 onwards, stinkbug leaf, chain grass, castor leaf feeding, silkworm childbearing well, to achieve the desired effect.