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有效中量就是使供试生物群体的半数——即50％起反应的用药“量”。这个“量”实际上包括“剂量”,“浓度”等。在农药生物测定中,用以衡量或比较药剂对供试生物对象在同样条件下,不同药剂间效力的大小。龚坤元(1963,《昆虫知识》七卷二期)“对有关点滴器应用性能测定”及张宗炳(1964,《植物保护》二卷三期)“对有关杀虫剂毒力测定统计”,两篇文章都对通过剂量同死亡率相关值作毒力回归线求有效中量的方法,作过详细介
The effective medium is to make half of the test biological population - that is, 50% of the reaction dose of medication. This “quantity” actually includes “dose”, “concentration” and so on. In the pesticide bioassay, used to measure or compare the efficacy of different agents on the test biological objects in the same conditions, the size of the drug. Gong Kunyuan (1963, Insect Knowledge, Volume 7, Issue 2), “Determination of Application Performance of Related Droppers” and Zhang Zongbing (1964, “Plant Protection” Articles are on the dose-related mortality rates as the virulence of the regression line for the effective method of volume, made detailed