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src="https://tyunfile.71360.com/UploadFile/JSjiangkangst/637243775153261719/706002.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="kuryu2q" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/JSjiangkangst/637243775153261719/706002.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="gaxpr2x" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>臨沂螞蟥技術</p><p><span>***更新：</span>2020-06-29 02:25:40</p><p><span id="click" >瀏覽次數：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wpmub2s" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇江康生態(tài)養(yǎng)殖有限公司</a></p><p><span>聯(lián)系人：</span>葉先生</p><p><span>郵箱: </span>1584171753@qq.com</p><p><span>電話: </span>18168552534</p><p><span>傳真: </span>181_68552534</p><p><span>網址: </span></p><p><span>手機: </span>181-68552534</p><p><span>地址: </span>江蘇省泰州市泰興市濱江鎮(zhèn)345國道旁</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="oskmon7" class="page-proshow02"><p class="title">詳細說明</p><div id="vuhjl7l" class="box"><p><p style="text-indent:25px">為了提高大棚的經濟效益，越冬池放養(yǎng)密度應增加，一般每平方米可放養(yǎng)種蛭50～100條，幼蛭每平方米300～500條。密度增加以后，應注意投喂足量的餌料，并注意水質變化，及時加注更換新水，當水溫超過32度以上時，要開啟大棚通風換氣降溫在進入寒冬季節(jié)，要關閉大棚通風口，臨沂螞蟥技術，保持池水溫度低。越冬管理是水蛭人工養(yǎng)殖的一個重要環(huán)節(jié)，保證水蛭的安全越冬，是獲得水蛭養(yǎng)殖高產豐收的重要前提。水蛭在溫度降到10°C以下時，便停止攝食，鉆入土中或樹葉下進行冬眠。早春放養(yǎng)的水絰,一般在9～10月份都可長成商品規(guī)格，可以捕獲、加工、出售。但在捕獲時，應先將池水排干，然后用網撈捕，臨沂螞蟥技術，選擇一部分個體大、生長健壯的個體留種，以備下一年進行繁殖將種蛭或未長成的小水蛭捕獲后，集中投人越冬池內越冬，臨沂螞蟥技術，每667平方米（畝）投放15～20千克，越冬池可以用養(yǎng)殖育種池兼用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="臨沂螞蟥技術" src="https://tyunfile.71360.com/UploadFile/JSjiangkangst/637243775153261719/706002.jpg"></div><p style="text-indent:25px">不同種類的土壤，其pH 值、含鹽種類及數量、含氧量、透水性和含腐殖質程度往往有所差別，將對水生生物的生長帶來影響。一般分為礫土、砂土、粘土、壤土和腐殖土5 個類型。水質較肥，即含有豐富的營養(yǎng)物質的，池底土質可用礫土、砂土；水質不肥，即營養(yǎng)物質不豐富，如使用地下水或自來水等，池底土質則應用腐殖土；如果池底漏水，比較低層還應用粘土夯實。因此，應根據水質條件來選擇不同類型的土質。池底土質應比較堅硬，上面有較肥的有機質。養(yǎng)殖池的水位應能控制自如，排灌方便。要做到旱能灌，澇能排，兩手都要抓。尤其要防止洪水的沖擊，以免造成不應有的損失。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="臨沂螞蟥技術" src="https://tyunfile.71360.com/UploadFile/JSjiangkangst/637243775154316407/9223891.jpg"></div><p style="text-indent:25px">酸臭、腥臭底質形成原因：池底**的有機質過多，主要是由于清塘不徹底、水蛭養(yǎng)殖過程投餌過剩、沒有采取措施定期改良底質等，另外，增氧措施不足，又沒有定期拋撒增氧劑，使得有機質沒有得到充分氧化分解，產生大量有毒中間產物，如氨氮亞硝酸鹽、硫化氫、甲烷等，嚴重時底質會產生大量有害氣體，出現“冒泡”現象。板結底質形成原因：多次大量使用化肥肥水、過量使用硫酸銅、殺蟲殺藻劑、大量使用生石灰等藥物，造成底質板結，底質與水體之間氣體、營養(yǎng)元素的交換被阻隔，水環(huán)境緩沖能力減弱，水質變化無常，水產動物容易產生應激反應。</p></p><br /><p>文章來源地址: 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