<h3><span style="color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5400000214576721px; text-align: justify; white-space: normal; -webkit-text-size-adjust: 100%;">新一年的小龙虾养殖工作逐步展开。近年小龙虾的价格居高不下,致使虾苗供不应求,价格也随之高涨。每年的三月下旬至五月是苗种供应的高峰期,在这段时期温度不稳定,气候变化多端给苗种投放带来了风险。很多养殖户因为操作不当受到很大的经济损失。苗种投放在整个养殖当中是至关重要的一个环节,成活率的高低直接影响经济效益。今天就和大家聊聊关于投苗,有哪些需要注意的事项。</span><br></h3> <h3><span style="color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5400000214576721px; text-align: justify; white-space: normal; -webkit-text-size-adjust: 100%;">一、虾苗投放前的准备:</span></h3><h3><span style="color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5400000214576721px; text-align: justify; white-space: normal; -webkit-text-size-adjust: 100%;">在苗种投放前应先培养水质、丰富藻类。</span></h3><h3><span style="color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5400000214576721px; text-align: justify; white-space: normal; -webkit-text-size-adjust: 100%;">如:EM菌、芽孢杆菌等有益菌群,保持水体的肥满度,打造一个良好的生存环境,减少苗种投放时的应激反应。</span></h3><h3><span style="max-width: 100%; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.54px; text-align: justify; white-space: normal; -webkit-text-size-adjust: 100%; word-wrap: break-word !important;"><br></span></h3><h3><span style="max-width: 100%; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.54px; text-align: justify; white-space: normal; -webkit-text-size-adjust: 100%; word-wrap: break-word !important;">二、温度与天气:</span></h3><h3><span style="max-width: 100%; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.54px; text-align: justify; white-space: normal; -webkit-text-size-adjust: 100%; word-wrap: break-word !important;">苗种投放应选择晴天上午,温度在17度左右较适合苗种的运输和投放,苗种适应能力强、恢复快、易管理。气温过低,苗种体质活力差,起捕和运输当中的机械损伤的伤口难以愈合,易感染,体能消耗难以恢复,成活率低。</span><br></h3> <p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">三、苗种运输:</h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">目前运输有两种方法,干运和湿运。<span style="letter-spacing: 0.54px; -webkit-tap-highlight-color: transparent;">一般采用干运法。苗种起捕后装篓,每篓装苗13斤左右,不易过多,以免压伤下层虾苗,留一定的空间供虾苗活动。</span><span style="letter-spacing: 0.54px; -webkit-tap-highlight-color: transparent;">装苗过程尽量动作细致、快速,减少机械损伤。</span></h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;"><br></h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">四、苗种放养:</h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">苗种经过运输离水时间较长会有脱水现象,应先浸水吸水调温。将虾苗浸水半分钟,提起搁置3-4分钟左右再次浸水,反复几次,让苗种体表和鳃部充分吸足水分后再开始放养。虾苗下塘应沿塘边的浅水区投放,不要集中一个地方放苗,避免堆压使下层虾苗窒息死亡。每亩投放量应根据苗种的大小调整,一般亩投量6000只(50-60斤)左右。</h3> <p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">五、苗种消毒,补钙,投喂:</h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">苗种下塘后大部分养殖朋友喜欢即刻消毒,此时苗种经过运输会有体能的消耗和环境的转换的应激反应,再用药物消毒不但起不到好的作用,反而刺激虾苗加剧了应激反应。</h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;"><br></h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">因此,消毒应在苗种放养3-4天后,虾苗逐步适应了新环境,体能体质也都得到了恢复此时再去消毒最好。</h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;"><br></h3><p style="margin-top: 16px; margin-bottom: 16px; max-width: 100%; clear: both; min-height: 1em; text-align: justify; white-space: normal; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; color: rgb(34, 34, 34); line-height: 28px; letter-spacing: 0.54px; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; word-wrap: break-word !important;">虾苗放养的第二天下午开始少量投喂,<span style="letter-spacing: 0.54px; -webkit-tap-highlight-color: transparent;">早投喂的能让虾苗早开口,快速适应新环境,恢复体能,增强体质,从而提高成活率。</span></h3>