The groth models of the 5th instar larvae of Bombyx mori were established by using Richards equation in the paper .

• 作者采用目前可塑性较强、准确性较高的Richards方程来描述家蚕5龄幼虫的体重增长情况，并建立了家蚕5龄幼虫及5龄不同性别幼虫的Richards生长模型。