水產(chǎn)養(yǎng)殖水質(zhì)調(diào)控ppt課件(參考版)
2025-01-21 16:13本頁(yè)面
【正文】 more phytoplankton means fertile,while less phytoplankton means poor. So the water named differently accordingly as fertile water, poor water, old water, and even good water (in terms of quality) . The regulation of water fertility for increasing species’ yield just obey the ground rules as follows. poor water bee fertile廋水變肥 Reasons for being poor:(1) lack of nutritional salt。s eye, the sign of fertile water is the rich color of it, which means the quantity of plant plankton. (2) circulating means there are changes of water color and transparency (3) fresh means the water is fertilize and vigorous. (4) clean the premise is fresh, which means the plant plankton is growing, and the same time there is few other suspendedsolids like mud in the water. ? we can see the biological standard of the water for fish cultivation in a fisherman39。s eye is high summarize as the four words. This is much more prehensive than only judge the water by its color. ? However, there actually has an concept of biological meaning of the four words. It39。水產(chǎn)養(yǎng)殖水質(zhì)調(diào)控 Water quality control of aquaculture Main
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1