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<div>　　<strong>溶解氧</strong>對魚類生存的重要性體現(xiàn)在多個方面，以下是詳細(xì)的解釋：<br /> </div><div>　　一、生存基礎(chǔ)<br /> </div><div>　　氧氣是魚類及水生生物賴以生存的基礎(chǔ)。與人類呼吸空氣中的氧氣不同，魚類呼吸的是水體中的溶解氧。因此，溶解氧是魚類進(jìn)行正常生理活動和新陳代謝所必需的。<br /> </div><div>　　二、影響攝食與消化<br /> </div><div>　　<strong>溶解氧</strong>的多少直接影響著魚類的攝食和消化功能。在溶解氧充足的情況下，魚類的攝食旺盛，對餌料的利用率高，生長迅速。相反，當(dāng)溶解氧不足時，魚類的攝食量和消化功能都會下降，導(dǎo)致生長緩慢。具體來說，溶氧量5mg/L以上時，魚類攝食正常；當(dāng)溶氧量降為4mg/L時，魚類攝食量下降13%；當(dāng)溶氧量下降到2mg/L時，其攝食量下降54%，有些魚已難以生存；下降到1mg/L以下時，魚類停止吃食，大部分魚不能生存。<br /> </div><div>　　三、影響生長與發(fā)育<br /> </div><div>　　溶解氧不僅影響魚類的攝食和消化，還直接影響其生長和發(fā)育。在溶解氧充足的水體中，魚類能夠充分利用餌料中的能量進(jìn)行生長和發(fā)育。而溶解氧不足時，魚類的能量轉(zhuǎn)化過程會受到抑制，導(dǎo)致生長緩慢甚至停止生長。<br /> </div><div>　　四、影響水質(zhì)與生態(tài)環(huán)境<br /> </div><div>　　溶解氧的多少還嚴(yán)重影響著池水的水質(zhì)狀況和生態(tài)環(huán)境。在溶解氧條件好時，有機(jī)物在好氣性微生物作用下分解快，浮游植物所需要的營養(yǎng)元素補(bǔ)充及時，生長旺盛。這些浮游植物通過光合作用產(chǎn)生氧氣，進(jìn)一步改善了水質(zhì)。相反，在缺氧條件下，有機(jī)物分解被抑制，在厭氧微生物的作用下產(chǎn)生氨、硫化氫等有害物質(zhì)增多。這些產(chǎn)物積累多了會對魚類產(chǎn)生危害，嚴(yán)重影響其生存。<br /> </div><div>　　五、防止疾病發(fā)生<br /> </div><div>　　充足的溶解氧還可以防止魚類疾病的發(fā)生。某些病原體(如病原菌、寄生原生動物)的繁殖、滋生以及產(chǎn)生毒力等需要特定的水質(zhì)條件。當(dāng)水體中的溶解氧充足時，這些病原體的生存和繁殖會受到抑制，從而減少魚類疾病的發(fā)生。</div> </div> <div id="qprrcczb" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-3866639/">EDI超純水系統(tǒng)的特點</a></li> <li>下一篇：<a href="/szhcy-Article-3856252/">工業(yè)在線PH儀的可靠性</a></li> </ul> </div> </div>   <div id="qprrcczb" class="foot_box"> <div id="qprrcczb" class="foot_t"> <div id="qprrcczb" class="w1200"> <a href="/">網(wǎng)站首頁</a>　|　<a href="/aboutus.html">關(guān)于我們</a>　|　<a href="/products.html">產(chǎn)品中心</a>　|　<a href="/news.html">新聞動態(tài)</a>　|　<a href="/article.html">技術(shù)文章</a>　|　<a href="/honor.html">榮譽(yù)資質(zhì)</a>　|　<a href="/order.html" target="_blank">在線留言</a>　|　<a href="/contact.html">聯(lián)系我們</a> <span><a href="javascript:;" class="toTop"></a></span> </div> </div> <div id="qprrcczb" class="foot_b"> <div id="qprrcczb" class="w1200"> <div id="qprrcczb" class="f_b_t clear"> <div 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