我们继2003年在本县良种场小规模试养倒刺鲃成功后,2004年扩大了倒刺銍示范养殖8．2 hm2(123亩),其中单养面积3．5 hm2(53亩),混养面积4．67 hm2(70亩)。单养部分2003年12月份投苗6万尾,其中2．2 hm2(33 亩)放养较大苗种(13 cm以上),至2004年12月捕捞, 共捕得成品鱼15 840 kg,产值33．26万元,利润12万元; Following the successful small-scale barnyardin trial in 2003 in our county’s breeding grounds, we expanded the demonstration area of ​​barnyard trumpet cultivation by 8.2 hm2 (123 acres) in 2004, of which monocropping area was 3.5 hm2 (53 mu) Polyculture area of ​​4.67 hm2 (70 acres). The monoculture section invested 60,000 seedlings in December 2003, of which 2.2 hm2 (33 acres) were stocked with larger seedlings (more than 13 cm) until December 2004 and captured a total of 15 840 kg of finished fish 332,600 yuan, profits 120,000 yuan;