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阐述蚕比较适育的温度。

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2021-12-27 20:20
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正确答案

在20—28度之间,该温度范围内,发育良好,生命力强,产茧量高,丝质好,1—2龄为26—27度,3龄为25—26度,4—5龄为23—24度。
蚕在多湿环境中饲养时,血液循环加快,脉搏凑出增加,呼吸旺盛,体温上升,食下量,消化量,消化率,随着温度的升高而增加,多湿时饲育经过时间缩短,其中以小蚕期较为显著。一般湿度>70%  空气湿度直接影响到蚕体水分代谢的平衡。  一龄为90%,二龄85%,三龄80%。四龄75%。五龄70%(逐龄递减5%)。


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