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<h1 class="xxcs1" title="水产养殖的水体指标都有哪几项，它们的正常值多少合适？">水产养殖的水体指标都有哪几项，它们的正常值多少合适？</h1>
<div class="cans"><span>时间：2020-04-01</span><span>点击次数：2375</span></div>


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		<div id="info"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">水产养殖对水体比较关注的指标基本上有这几个：PH，DO（溶解氧），氨氮，亚硝酸盐，水温，盐度。还有个别的会关注一下总碱度和硫化氢。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">PH：绝大多数水产养殖品种在中性或者弱碱性的水环境下比较适合生存，比如在ph7.5-8.2之间。淡水鱼类对ph的适应范围能更广一下，在ph6.5-9.0之间都可以。说句题外话，在观赏鱼养殖中，有专门玩草缸的爱好者，这种草缸的水环境要求是弱酸性。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">溶解氧：有耐低氧的品种和不耐低氧的品种，但总体来说DO大于5mg/L比较好，当然，溶解氧过高，会使鱼类得气泡病。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">氨氮：基本都要求低于0.2mg/L，高了会使养殖品种中毒。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">亚硝酸盐：一般会要求低于0.1mg/L，高了的话会向氨氮转化，间接导致水产动物中毒。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">总碱度：我只在南美白对虾养殖中了解到这个指标，要求在80-120mg/L。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">硫化氢：基本也是要求低于0.1mg/L。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">水温：根据养殖品种的不同，要求也不同。比如大菱鲆属于冷水性鱼类，水温在12-18度比较合适，海参在10-16度比较合适，水温高于20度就会进行夏眠。南美白对虾喜欢高水温，在22度以上生长速度比较快。</span><br style="content:&quot;display:block;width:705px;height:0px;color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff"><span style="color:#333333;font-family:&quot;font-size:16px;background-color:#ffffff">盐度：同水温一样，不同品种对盐度要求也不一样。淡水养殖品种就不说了，海水养殖品种有广盐性和狭盐性的区分，广盐性的品种在不同盐度下都可以生存，比如鲟鱼，花鲈，南美白对虾，虹鳟。而狭盐性品种只在一定盐度范围内才可以生存，比如海参等，而且水体的盐度不易短时间内变化太快。</span></div><p></p><a href="http://www.gzdeao.com.cn/" target="_blank">http://www.gzdeao.com.cn</a>
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