《水產(chǎn)養(yǎng)殖水質(zhì)調(diào)控》ppt課件(文件)
【正文】 ns 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。水產(chǎn)養(yǎng)殖水質(zhì)調(diào)控 Water quality control of aquaculture Main factors affecting water quality ? Chemistry: 工業(yè)，農(nóng)業(yè)，人為活動 ? Biology: ， PH of water quality control 養(yǎng)殖水體水質(zhì)調(diào)控方法 control ? Use chemicals to control PH and toxic (有毒） gas. Physical control bottom layer quality ?改善底質(zhì) resource treatment ?水源處理 exchange or refill ?更換或補充新水 Biological control生物控制 ? Increse useful zoonplankton through artificial culture. ? Microecologics微生態(tài)制劑 ? Photosynthetic bacteria光合細菌 ? Higher aquatic plants水生植物 Biological control of water quality ? 養(yǎng)殖水體水質(zhì)生物調(diào)控措施 Obsercation of color and transparency水色和透明度觀察 ——“看水” ? The fisherman observe the pond water mainly about漁民看水主要依據(jù) 1. water color (water expression)水色 (水華 ) （ 1） The relationship between water color and plant pl
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