在研究昆虫幼虫的龄和龄期的过程中,一般采用室内个体饲养的方法来进行。由于室内饲养的环境条件与野外存在一定的差别,且一般饲养的个体数量少,所得平均数并不能代表所有的集中性常数,受极端数字的影响大,往往 Insect larvae in the study of age and age of the process, the general method of using individual indoor rearing. Because of the difference between the environmental conditions of indoor rearing and the wild, and the small number of individuals generally raised, the average income does not represent all the concentration constants and is greatly affected by the extreme numbers.