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要有效防止稻田培育蟹种成活率低的现象产生,首先应搞清楚其成活率低的原因,然后对症下药,才能达到其应有的防治效果。1.稻田培育蟹种成活率低的原因。①苗种质量差。稻田养殖户多购买人工繁殖蟹苗培育。部分人工繁殖蟹苗在蚤状幼体变态过程中,没有投喂丰年虫或投喂不足,或因大
To effectively prevent the phenomenon of low survival rate of cultivated crabs in rice production, we should first understand the reason of its low survival rate, and then the right medicine, in order to achieve its due control effect. 1. Rice cultivated crab species of low survival rate. ① poor seed quality. More rice farmer households to buy artificial breeding Crab cultivation. Part of the artificial propagation of crab in the flea larvae metamorphosis process, there is no feeding of Artemia or inadequate feeding, or because of large