水產(chǎn)養(yǎng)殖水質(zhì)調(diào)控ppt課件-在線瀏覽
2025-03-07 16:13本頁面
【正文】 ile wate 100 5 no color Unfertile water 10050 510 a little color Fertile water 50(40)20 10(20)100 tinted High fertile water 2010 100200 rich color Used out water 10 200 very rich color 3. Observation of water nutrition水體肥瘦與水質(zhì)判別 ? Iii Water fertility and the water quality: fertilized, circulating, fresh, cleanThe meaing of fertilized, circulating, fresh and clean in biology肥、活、嫩、爽 ? The good water in fisherman39。s quite essential to make this clear by test the species and quantity of the plant plankton. （ 1） Fertility. The concept of fertile water is not unified now. some according to the nutritive saltsand and dissolved anic matter quantity, some according to the amount of plankton. ? But in a fisherman39。s eye: quantity of plant plankton should be 20100 milligram per 20－ 100毫克 /升 Flagellatae, few smallsize blue 毛藻類較多，小型藍(lán)藻較少 algae munity in a growing period and no senescence of the ，細(xì)胞未老化 too much suspended substance except
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