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水产良种
释义
水产良种
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农学
水产良种
释
aquatic improved varieties
水产良种
广义指生长快、品质好、抗逆性强、性状稳定和适应一定地区自然条件并用于养(增)殖生产的水产原种和新品种。狭义指水产新品种。即经多代人工选择育成的具有遗传稳定,并有别于原种或同种内其他群体之优良经济性状及其他表型性状的水产品种。
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drainage consolidation
drainage container
drainage density
drainage development planning
drainage dewatering
drainage ditch on slope
drainage during construction
drainage engineering management
drainage floor drain
drainage gas production technology
drainage in ancient China
drainage index
drainage in saline-alkali land planting
drainage & irrigation textiles
drainage lifting equipment
drainage management
drainage map
drainage method
drainage modulus for surface waterlogging control
drainage network
drainage of exploratory tunnel
drainage of operating tunnel
drainage of tunnel and underground engineering
drainage of tunnel arch
drainage of tunnel substructure
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