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随着人们生活水平的提高,对商品河蟹的品质要求也越来越高了,希望能吃上“大、清、满”的河蟹。要想养出大规格、高品质的商品蟹,应采取以下技术措施。 1.四定投饵 河蟹是杂食性动物,尤喜动物性饲料。应根据不同的生长阶段,搞好饲料搭配与组合。日常投饵要做到(1)定时:每天投喂2次,上午8～9时投喂一次,投喂量占全天量的20％～30％;
With the improvement of people’s living standards, the quality requirements of commodity crabs are also getting higher and higher, hoping to eat “big, clear, full” crabs. To raise large-size, high-quality commercial crab, should take the following technical measures. 1. Four fixed feeding crab is omnivorous animals, especially animal feed. Should be based on different stages of growth, improve feed mix and combination. Daily feeding to be done (1) Timing: feeding 2 times a day, 8 am to 9 am feeding time, the amount of feeding accounted for 20% to 30% of the total amount;