鱼类增养殖学
“鱼类增养殖学” 问题列表
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Saturday, October 5, 2024
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问题：（）是使鱼得病的生物称为病原体，它包括病毒、细菌、真菌、藻类、原生动物、蠕虫、蛭类、寄生甲壳类等。...
Monday, October 17, 2022
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问题：引起病鱼呈“跑马”症状的疾病有（）。A、烂鳃病B、饥饿C、车轮虫病D、指环虫病...
Tuesday, April 11, 2023
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Monday, September 12, 2022
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问题：鱼农综合中作为草食性鱼青饲料的黑麦草，其饲料系数为（）A、30～40B、25～30C、17～23D、25～35...
Thursday, January 25, 2024
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Friday, September 16, 2022
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Thursday, August 8, 2024
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Tuesday, August 6, 2024
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Monday, July 1, 2024
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Friday, September 16, 2022
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问题：淤泥较少的池塘干法清塘时石灰用量为（）千克/亩。A、125-150B、50-60C、150-200D、200-250...
Saturday, December 2, 2023
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Sunday, September 11, 2022
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问题：家鱼亲鱼的放养密度依条件不同而定，一般不超过（）公斤／亩。A、500B、400C、100-200D、200-300...
Thursday, August 28, 2025
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Sunday, October 27, 2024
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问题：影响鱼类催情剂效应时间的因素有哪些？各因素会产生什么影响？...
Monday, September 12, 2022
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Monday, July 8, 2024
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Thursday, August 28, 2025
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Saturday, October 5, 2024
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Monday, September 12, 2022
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Sunday, October 13, 2024