回答提高蠶絲的產(chǎn)量,應(yīng)該延長(zhǎng)幼蟲(chóng)期。蠶發(fā)育過(guò)程為受精卵、幼蟲(chóng)、蛹、成蟲(chóng)四個(gè)時(shí)期,蠶由受精卵發(fā)育成幼蟲(chóng),取食桑葉,經(jīng)過(guò)4次蛻皮,停止取食桑葉,吐絲結(jié)繭,想要提高蠶絲產(chǎn)量,應(yīng)該延長(zhǎng)蠶發(fā)育的幼蟲(chóng)期,增加其體內(nèi)的營(yíng)養(yǎng)物質(zhì)。
回答提高蠶絲的產(chǎn)量,應(yīng)該延長(zhǎng)幼蟲(chóng)期。蠶發(fā)育過(guò)程為受精卵、幼蟲(chóng)、蛹、成蟲(chóng)四個(gè)時(shí)期,蠶由受精卵發(fā)育成幼蟲(chóng),取食桑葉,經(jīng)過(guò)4次蛻皮,停止取食桑葉,吐絲結(jié)繭,想要提高蠶絲產(chǎn)量,應(yīng)該延長(zhǎng)蠶發(fā)育的幼蟲(chóng)期,增加其體內(nèi)的營(yíng)養(yǎng)物質(zhì)。