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【實用技術】秋季水產(chǎn)養(yǎng)殖管理技術要點

2024-09-12 10:12:55 來源:鄂爾多斯市農(nóng)牧局 閱讀量:18162 評論

導讀:入秋后,氣溫、水溫逐漸回落,高溫天氣逐漸減少,夜溫差較大,水產(chǎn)動物攝食量較大,生長最快,糞便排泄量也最多,加強生產(chǎn)管理極為重要。

  【農(nóng)機網(wǎng) 科技創(chuàng)新】 秋季是水產(chǎn)動物生長、育肥和收獲的重要季節(jié)。入秋后,氣溫、水溫逐漸回落,高溫天氣逐漸減少,夜溫差較大,水產(chǎn)動物攝食量較大,生長最快,糞便排泄量也最多,加強生產(chǎn)管理極為重要。
 
  
 
  加強水質管理
 
  入秋后水產(chǎn)動物攝食量大、排泄物同時增多,不少池塘水體呈富營養(yǎng)化,且進入冷暖空氣交替階段,早晚氣溫溫差會比較大、池塘上下水層易形成對流,如遇到悶熱、暴雨等不利天氣,極易發(fā)生水質惡化,引起養(yǎng)殖水產(chǎn)品缺氧浮頭甚至泛池等重大水產(chǎn)品養(yǎng)殖事故。所以,應加強水質管理,調(diào)控水質。一是定期使用含氯消毒劑消毒養(yǎng)殖水體,定期換水,并用微生態(tài)制劑調(diào)節(jié)水質,使養(yǎng)殖水體始終保持“肥、活、嫩、爽”狀態(tài)。二是應根據(jù)天氣和養(yǎng)殖物種的活動及時合理地打開增氧機,以增加水溶解氧量,促進水產(chǎn)動物的食欲和抗病性。
 
  
 
  科學投喂
 
  入秋水溫逐漸下降后,魚蝦蟹等水生動物迎來了最適生長期,因此要抓緊時機,投喂適宜的飼料,促進快速育肥,以便及時達到上市規(guī)格。喂食應根據(jù)天氣、水質和魚類攝入情況靈活掌握。飼料必須營養(yǎng)全面,適口性好。同時,要保證飼料新鮮,堅決杜絕使用發(fā)霉、腐爛、變質的飼料,避免造成水體污染。
 
  
 
  病害防治
 
  秋天是水產(chǎn)動物的高發(fā)期,每天早晚做好池塘巡邏工作,檢查水產(chǎn)動物的活動和攝食情況。應遵循“預防為主、科學診斷、對癥下藥”的原則,加強水質調(diào)控,減少病害發(fā)生。同時結合內(nèi)服抗病提高免疫力的藥物預防魚病。蟹、蝦養(yǎng)殖池塘要合理控制水草密度和分布,多余和已死亡的水草及時撈出,減少水草的腐爛引發(fā)的病害及耗氧等。另外堅決杜絕使用違禁漁藥和“三無”漁藥,并嚴格執(zhí)行休藥期制度,確保水產(chǎn)動物的質量安全。
 
  養(yǎng)殖的水產(chǎn)動物達到上市規(guī)格就可以適時上市銷售,及早做好銷售前的準備工作,降低養(yǎng)殖風險,提高養(yǎng)殖效益。
 
  來源:市農(nóng)牧技術推廣中心
 
  作者:王婷
 
  審核:吳桃、徐鑫
 
  校對:王婷
 
  編輯:任必歆
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