《水产养殖水质调控》PPT课件.ppt

水产养殖水质调控1 6Waterqualitycontrolofaquaculture 1 6 1MainfactorsaffectingwaterqualityChemistry 工业 农业 人为活动Biology D O PH 1 6 2Methosofwaterqualitycontrol养殖水体水质调控方法1 6 2 1ChemicalcontrolUsechemicalstocontrolPHandtoxic 有毒 gas 1 6 2 2Physicalcontrol1 Improvebottomlayerquality改善底质2 Waterresourcetreatment水源处理3 Waterexchangeorrefill更换或补充新水 1 6 2 3Biologicalcontrol生物控制1 Increseusefulzoonplanktonthroughartificialculture 2 Microecologics微生态制剂3 Photosyntheticbacteria光合细菌4 Higheraquaticplants水生植物 1 6 3Biologicalcontrolofwaterquality养殖水体水质生物调控措施1 6 3 1Obsercationofcolorandtransparency水色和透明度观察 看水 Thefishermanobservethepondwatermainlyabout渔民看水主要依据1 watercolor waterexpression 水色 水华 1 Therelationshipbetweenwatercolorandplantplankton Table1 1 2 Watercolor waterexpression inrichwater肥水 水华 类型 Thephenomenonthatthewatershowsevidentcolorowingtothemasspropagationofplantplanktoniscallwaterexpression Itcanbedividedintothefollowtypesaccordingtoitsapperance Table1 2 3 Judgethewaterqualitybyit scolorandexpression Table1 3 根据水色 水华类型判断水质 2 transparency透明度 1 Watertransparencyandthephytoplankton透明度与浮游植物的关系 2 Watertransparencyandthewaterfertility透明度与水体肥度 Table1 4 3 Observationofwaternutrition水体肥瘦与水质判别IiiWaterfertilityandthewaterquality fertilized circulating fresh cleanThemeaingoffertilized circulating freshandcleaninbiology肥 活 嫩 爽 Thegoodwaterinfisherman seyeishighsummarizeasthefourwords Thisismuchmorecomprehensivethanonlyjudgethewaterbyitscolor However thereactuallyhasanconceptofbiologicalmeaningofthefourwords It squiteessentialtomakethisclearbytestthespeciesandquantityoftheplantplankton 1 Fertility Theconceptoffertilewaterisnotunifiednow someaccordingtothenutritivesaltsandanddissolvedorganicmatterquantity someaccordingtotheamountofplankton Butinafisherman seye thesignoffertilewateristherichcolorofit whichmeansthequantityofplantplankton 2 circulatingmeanstherearechangesofwatercolorandtransparency 3 freshmeansthewaterisfertilizeandvigorous 4 cleanthepremiseisfresh whichmeanstheplantplanktonisgrowing andthesametimethereisfewothersuspendedsolidslikemudinthewater wecanseethebiologicalstandardofthewaterforfishcultivationinafisherman seye A Thequantityofplantplanktonshouldbe20 100milligramperliter 浮游植物量20 100毫克 升B ManyFlagellatae fewsmall sizebluealgae 鞭毛藻类较多 小型蓝藻较少C Thealgaecommunityinagrowingperiodandnosenescenceofthecell 藻类种群处于增长期 细胞未老化D Nottoomuchsuspendedsubstanceexceptplankton 浮游生物以外的其它悬浮物不过多 1 6 3 2RegulationofWaterFertility水体肥度调控 Thefertilityofbreedingwatermainlydependsonthequantityofphytoplankton morephytoplanktonmeansfertile whilelessphytoplanktonmeanspoor Sothewaternameddifferentlyaccordinglyasfertilewater poorwater oldwater andevengoodwater intermsofquality Theregulationofwaterfertilityforincreasingspecies yieldjustobeythegroundrulesasfollows 1 Makingpoorwaterbecomefertile廋水变肥Reasonsforbeingpoor 1 lackofnutritionalsalt 2 phytoplanktonhasbeenintakenbyzoonplankton Watercontrol Addfertilizer Organicornon organic ornutritionalsalt nitrogenandphosphorus 2 Notlettingfertilewaterbecomeold肥水不老Inoldwaterphytoplanktonovermultiply Andthewaterislackofnutritivesaltandlightsophotosynthesiscannotworkproperly Oldwateristhewaterinwhichphytoplanktoncellbecomesold Watercontrol Ataround10amofsunnyday use 1PPM CuSO4tokillgreenalgae Ataround5pm drainhalfofthepondandrefillwithnewwater 3 Oldbecomesgood老水转好Goodwatermustbefertilewater whichmeansthattherearesufficientphytoplanktonasprimaryproducertobeeatenbyraisedanimalsandbaitanimals inthemeantime theycanofferoxygentowate