发布时间:2025-02-05 00:52:20
想要不把基围虾养死,一定要注意水质,ph要维持在7-8之间,溶氧也不能太低,每升至少是4毫克。投放虾苗一个月后,需要投喂人工饲料,还要加一点贝类和杂鱼,水温保持在20-30℃之间,这样才有食欲,低于15℃的话则要减少投喂。另外,投喂的时间多在夜晚。
光圈32快门320iso100在室内拍摄不开闪光灯可拍出来的照片是一片漆黑这是如何一回事解
2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20采用轨模摊铺机施工面层时其基层每侧至少宽出水泥混凝土道路mm
2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20 2025-02-05 00:52:20