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昆虫蜕皮激素对昆虫的变态具有明显的控制作用,是有希望的第三代杀虫剂。但由于来源有限,化学合成产率低、成本高,至今还只局限于实验室。有人证实平卧川牛滕留酮及其脂的0.1％溶液能杀死稻螟幼虫(Cakan等1971年),对防治白菜粉蝶毛虫也有效。 1976年,我们开始了蜕皮激素植物资源、化学和应用的研究。1977—1978年采用本省罗田县生长的一种筋骨草(紫背金盘Ajuganipponensis Makino)作试验材料(主要内含β-蜕皮激素)。分别在湖北省农科院植保所、沔阳县微生物站以及广济县农业局的协助下,选择了菜粉蝶、棉夜蛾、棉铃虫、稻苞虫、稻纵卷叶螟、稻螟蛉进行了药效试验。 试验采用两种剂型:(1)粗制剂:筋骨草的水煮液。(每克于草含有500—800ppm的蜕皮激素)。(2)精制剂:从筋骨草中提取分离出来的纯蜕皮激素精品。用时先用乙醇溶解,再加水稀释到所需浓度。
Insect ecdysone on insect metamorphosis has a significant role in the control, there is hope that the third generation of insecticides. However, due to limited sources, low chemical synthesis yield and high cost, it is still confined to the laboratory. It was confirmed that the horizontal chuanniu tenhan ketone and 0.1% of its fat solution can kill rice borer larvae (Cakan et al 1971), for the control cabbage white butterfly caterpillars also effective. In 1976, we started the study of ecdysone plant resources, chemistry and application. From 1977 to 1978, a barley grass (Ajuganipponensis Makino) grown in Luotian County of the province was used as the test material (mainly containing β-ecdysone). With the assistance of Plant Protection Institute of Hubei Academy of Agricultural Sciences, Leiyang County Microbiological Station and Guangji County Bureau of Agriculture respectively, cabbage butterfly, cotton bollworm, cotton bollworm, rice stem borer, rice leaf borer Efficacy test. Two types of dosage forms were tested: (1) Crude extract: Radix bupleurum boiled liquid. (500-800 ppm ecdysone per gram of grass). (2) Refining agent: Extract the pure ecdysone essence extracted from the bract grass. When used first dissolved in ethanol, diluted with water to the desired concentration.