1) Ponds bottom soil quality improvement
池塘底质改良
2) Ponds water quality improvement
池塘水质改良
3) pond sediment
池塘底质
1.
Related factors on natural spawning rate of Channel Catfish were been studied,including natural spawning in different parent fish ages,stocking densities,spawning tank type,feed type,local climatic and pond sediment type.
斑点叉尾是重要的经济养殖鱼类,本文从斑点叉尾亲鱼年龄、放养密度、产卵槽类型、饲料类型、池塘局部气候条件、池塘底质类型等方面对影响斑点叉尾自然产卵的关键因素进行了研究。
4) bottom characteristic improvement
底质改良
5) Sediment
[英]['sedɪmənt] [美]['sɛdəmənt]
池塘底泥
1.
Indoor Simulation Study on Nutrient Release of Fishponds Sediment
池塘底泥营养盐释放的室内模拟研究
2.
The sediments and overlying water sampled from two different ponds A and B were placed in glass aquaria and cultured for 4 months under indoor environment to simulate pond environment, and six treatments were designed in the experiment to compare their effects on the forms of P and the content of dissolved reactive phosphorus (DRP).
取两个池塘底泥和上覆水进行室内模拟水体小环境试验,设对照组及5个处理组,进行4个月培养,采用连续分组法测定底泥中无机磷形态及其含量,分析底泥潜在无机磷变化及其与上覆水体可溶性活性磷(DRP)含量的关系。
6) Sediment restoration method
池塘底质修复技术
补充资料：池塘
1.蓄水的坑，一般不太大，也不太深。 2.浴池的俗称。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条